Expired, full termArchiveSolo inventor
Electric circuits for reducing the effect of shunt capacity or reactance introduced by circuit elements
US 2,149,331 A · Inventors: DOWER BLUMLEIN ALAN
Overview
3 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 March 7, 1939. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by March 7, 1956.
- We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledJuly 8, 1936
GrantedMarch 7, 1939
Term endedMarch 7, 1956
Application number—
Classification (CPC)H03F3/36
Length12 pages
Sources & verification
Official USPTO records
Cross-check elsewhere
Everything on this page comes from the USPTO record linked above.