Patent US2691092A successfully refreshed from Google Patents.
US2691092A
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Safety work light
Assignee: Douglas Aircraft Co Inc
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Filing: 1950-12-30
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Granted: 1954-10-05
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Expires: 1970-12-30
Abstract
No abstract record available.
Inventors
- 👤 Donald G Mcconnell
- 👤 Richard A Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:28
CPC Classifications
F; F21; F21L; F21L14/00; F21L14/02; F21L14/026; F21V; F21V15/00; F21V15/04; F21V19/00; F21V19/0075; F21V19/008; F21V19/0085; F21V21/00; F21V21/40; F21V21/406; F21V23/00; F21V23/02; F21Y; F21Y2103/00; Y; Y10; Y10S; Y10S315/00; Y10S315/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US562208A
Cited
US1794777A
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DE525325C
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US2357591A
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US2439589A
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US2347174A
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US2447922A
Cited
US2429850A
Cited
US2472180A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-04 | 1958-04-05 | 1958-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-04 | 1962-04-05 | 1962-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-04 | 1966-04-05 | 1966-10-05 | $7700.00 | Window Closed / Lapsed |