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US2118996A
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US
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Emergency lamp
Assignee: WINCKLER ENGINEERING LAB Inc
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Filing: 1934-07-25
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Granted: 1938-05-31
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Expires: 1954-07-25
Abstract
No abstract record available.
Inventors
- 👤 Gunnar A F Winckler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:55
CPC Classifications
B; B60; B60Q; B60Q7/00; B60Q3/00; B60Q3/50; B60Q3/59; F; F21; F21L; F21L13/00; F21L4/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-05-30 | 1941-11-29 | 1942-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-05-30 | 1945-11-29 | 1946-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-05-30 | 1949-11-29 | 1950-05-31 | $7700.00 | Window Closed / Lapsed |