US2534037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unitary shade, deformable reflector, and lens assembly
Assignee: Singer Co
•
Filing: 1946-04-05
•
Granted: 1950-12-12
•
Expires: 1966-04-05
Abstract
No abstract record available.
Inventors
- 👤 Wilfred O Langille
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:15
CPC Classifications
D; D05; D05B; D05B79/00; F; F21; F21S; F21S13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US566553A
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US1302924A
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US1769426A
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US2001030A
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US2090239A
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US2208522A
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GB494128A
Cited
US2225217A
Cited
US2273728A
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US2258354A
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US2347420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |