Expired, full termArchiveSolo inventor
Pulse multiplex communication system
US 2,454,792 A · Inventors: GRIEG DONALD D
Overview
4 drawing sheets
Every sheet is in the USPTO PDF.
Open the USPTO PDFRead the whole patent
Listed from its USPTO record in Patent Yard's full-term archive. Its claims, description and drawings are in the USPTO PDF and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted November 30, 1948. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by November 30, 1965.
- We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledAugust 19, 1944
GrantedNovember 30, 1948
Term endedNovember 30, 1965
Application number—
Classification (CPC)H04J3/1676
Length9 pages
Sources & verification
Official USPTO records
Cross-check elsewhere
Everything on this page comes from the USPTO record linked above.