Patent US2438012A successfully refreshed from Google Patents.
US2438012A
Expired / Lapsed
US
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Lamp holders
Assignee: Westinghouse Electric Corp
•
Filing: 1945-07-20
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Granted: 1948-03-16
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Expires: 1965-07-20
Abstract
No abstract record available.
Inventors
- 👤 Alfred H Laidig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:59
CPC Classifications
H; H01; H01R; H01R33/00; H01R33/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1629970A
Cited
DE650813C
Cited
US2228646A
Cited
US2221402A
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US2288376A
Cited
US2303156A
Cited
US2313036A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-16 | 1951-09-15 | 1952-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-16 | 1955-09-15 | 1956-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-16 | 1959-09-15 | 1960-03-16 | $7700.00 | Window Closed / Lapsed |