Patent US4941122A successfully refreshed from Google Patents.
Patent US1238849A successfully refreshed from Google Patents.
US1238849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamp-socket.
Assignee: National Carbon Co Inc
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Filing: 1916-04-22
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Granted: 1917-09-04
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Expires: 1936-04-22
Abstract
No abstract record available.
Inventors
- 👤 George W Wacker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:14
CPC Classifications
H; H01; H01R; H01R33/00; H01R33/97; H01R33/971
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1920-09-03 | 1921-03-05 | 1921-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-09-03 | 1925-03-05 | 1925-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-09-03 | 1929-03-05 | 1929-09-04 | $7700.00 | Window Closed / Lapsed |