US2797309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flashlight
Assignee: Individual
•
Filing: 1952-11-04
•
Granted: 1957-06-25
•
Expires: 1972-11-04
Abstract
No abstract record available.
Inventors
- 👤 Dulberg Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:05
CPC Classifications
F; F21; F21L; F21L4/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US15660A
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US1386474A
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US1884104A
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US2009182A
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US2249689A
Cited
US2104340A
Cited
US2312305A
Cited
US2561709A
Cited
US2458063A
Cited
US2435689A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |