Patent US2851623A successfully refreshed from Google Patents.
US2851623A
Expired / Lapsed
US
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Electric lamps
Assignee: ABRAHAM DUECK PENNER
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Filing: 1955-04-07
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Granted: 1958-09-09
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Expires: 1975-04-07
Abstract
No abstract record available.
Inventors
- 👤 Jack H Berger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:44
CPC Classifications
H; H01; H01R; H01R33/00; H01R33/94; F; F21; F21K; F21K5/00; F21K5/02; H01K; H01K1/00; H01K1/42; H01K1/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US271171A
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US273554A
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US288217A
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US365189A
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US392666A
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US1373920A
Cited
US2158849A
Cited
US2465084A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |