Patent US3984942A successfully refreshed from Google Patents.
Patent US2623158A successfully refreshed from Google Patents.
US2623158A
Expired / Lapsed
US
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Multiple bulb electric lantern
Assignee: Individual
•
Filing: 1948-05-03
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Granted: 1952-12-23
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Expires: 1968-05-03
Abstract
No abstract record available.
Inventors
- 👤 Chester W Crumrine
- 👤 Berwin W Jacobs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:35
CPC Classifications
F; F21; F21V; F21V19/00; F21V19/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1105829A
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US1802145A
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US2245707A
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US2259307A
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US2244895A
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US2274932A
Cited
US2300304A
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US2369637A
Cited
US2524435A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |