Expired, full termArchiveSolo inventor
Stranded cable
US 1,677,458 A · Inventors: ALGERNON PARSONS CHARLES et al.
Overview
1 drawing sheet
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 July 17, 1928. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by July 17, 1945.
- We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledMay 1, 1922
GrantedJuly 17, 1928
Term endedJuly 17, 1945
Application number—
Classification (CPC)H01B9/00
Length3 pages
Sources & verification
Official USPTO records
Cross-check elsewhere
Everything on this page comes from the USPTO record linked above.