US2481355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamp construction
Assignee: Foster & Davies Inc
•
Filing: 1946-02-15
•
Granted: 1949-09-06
•
Expires: 1966-02-15
Abstract
No abstract record available.
Inventors
- 👤 Schwartz Frederick
- 👤 Murray R Lewis
- 👤 Henry R Feldman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:14
CPC Classifications
F; F21; F21S; F21S6/00; F21S6/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1169932A
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US1974077A
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US1889288A
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US2076032A
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US2068246A
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US2198096A
Cited
US2270497A
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US2331893A
Cited
US2411189A
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US2420471A
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US2424908A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-05 | 1953-03-07 | 1953-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-05 | 1957-03-07 | 1957-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-05 | 1961-03-07 | 1961-09-06 | $7700.00 | Window Closed / Lapsed |