US2742564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide angle illuminating fixture
Assignee: Douglas Aircraft Co Inc
•
Filing: 1952-02-23
•
Granted: 1956-04-17
•
Expires: 1972-02-23
Abstract
No abstract record available.
Inventors
- 👤 George A Bronson
- 👤 Harlan E Pitcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:23
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/2619; B60Q1/2623; B60Q1/2626
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US960926A
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US1793227A
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GB362649A
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US1922618A
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US2146662A
Cited
US2172248A
Cited
GB514949A
Cited
US2316835A
Cited
US2257127A
Cited
US2373815A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-17 | 1959-10-17 | 1960-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-17 | 1963-10-17 | 1964-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-17 | 1967-10-17 | 1968-04-17 | $7700.00 | Window Closed / Lapsed |