Patent US2481531A successfully refreshed from Google Patents.
US2481531A
Expired / Lapsed
US
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Fitting for lighting fixtures
Assignee: Benjamin Electric Manufacturing Co
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Filing: 1945-07-11
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Granted: 1949-09-13
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Expires: 1965-07-11
Abstract
No abstract record available.
Inventors
- 👤 Paul D Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:41
CPC Classifications
F; F21; F21V; F21V17/00; F21V17/10; F21V17/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1960922A
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US1746340A
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US1970709A
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US2070195A
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US2240634A
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US2279595A
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US2285728A
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US2344327A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-12 | 1953-03-14 | 1953-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-12 | 1957-03-14 | 1957-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-12 | 1961-03-14 | 1961-09-13 | $7700.00 | Window Closed / Lapsed |