FR1174733A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvements to battery-powered electric lamps
Assignee: Vernon Walter Meager
•
Filing: 1957-04-30
•
Granted: 1959-03-16
•
Expires: 1977-04-30
Abstract
No abstract record available.
Inventors
- 👤 Vernon Walter Meager
- 👤 Stuart Netherwood Barker
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-31 15:41
CPC Classifications
F; F21; F21V; F21V31/00; F21L; F21L4/00; F21V23/00; F21V23/04; F21V23/0414; F21V14/00; F21V14/04; F21V14/045; F21V25/00; F21V25/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.