![]() Original Assignee Comsat Corp Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US00170929A Inventor W Schmidt O Gabbard J Husted W Maillet H Haeberle Current Assignee (The listed assignees may be inaccurate. Google Patents Tdma satellite communications system with improved acquisitionĭownload PDF Info Publication number US3812430A US3812430A US00170929A US17092971A US3812430A US 3812430 A US3812430 A US 3812430A US 00170929 A US00170929 A US 00170929A US 17092971 A US17092971 A US 17092971A US 3812430 A US3812430 A US 3812430A Authority US United States Prior art keywords burst data signal phase square wave Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US3812430A - Tdma satellite communications system with improved acquisition If you have any questions about Espacenet, please contact PRV's Patent Support for more information.US3812430A - Tdma satellite communications system with improved acquisition In order to read them you need Adobe Acrobat Reader or similar software. The complete patent documents are in PDF format. To limit a search in Advanced search to only Swedish documents, enter SE in the "Publication number" field. ![]() To limit a search in Smart search to only Swedish documents, use the prefix PN=SE in your search statement. If you want to select a different database please click here If you select Classification search you can consult the classification schemes of CPC, the Cooperative Patent Classification.Īs default, Smart search is connected to the Worldwide database. If you want to make a more detailed search, for example using bibliographic data, choose Advanced Search. Here you can make a simple search by entering a query in the Smart search field. , since it enables Swedish full text search in the entire Swedish patent documentation. Swedish documents can be searched in the Worldwide database, but only when there is an English translation of the title or abstract.įor searching only Swedish documents we therefore recommend PRV's service Swedish Patent Database Furthermore, the letters å, ä and ö have in the past been transcribed (for example å to aa, ä to ae or e and ö to oe), and the search engine cannot handle the transcriptions automatically. The search engine doesn't support the Swedish letters å, ä and ö, which are treated as a or o. ![]() For documents published until 2017, most often only only the titles of the documents can be searched (from 1975 for all types of documents). Text search in the SE database has some limitations. To switch to the Worldwide EN database, either click here Swedish patent documents published in English can be searched in the Worldwide EN database. To switch to the SE database, either click here For older documents, only the titles can be searched. Text search can be made in titles, description and claims from documents published after. The SE database contains Swedish patent documents published in Swedish. Text search can only be made in the respective languages, in titles, abstracts and full text. The Worldwide EN, Worldwide FR and Worldwide DE databases only contain documents published in English, French and German, respectively. Text search can be made in English, in titles and abstracts. The Worldwide database contains patent documents from the all countries. In Espacenet you can search in five different databases: Some of the oldest documents are not searchable by bibliographic data, but can be retrieved using their publication numbers. For some countries documents from the 1800s up to now are available. Espacenet gives you access to more than 130 million documents from all over the world, including Sweden.
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