Patent US2818498A successfully refreshed from Google Patents.
US2818498A
Expired / Lapsed
US
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Flash-light and extension-light combined
Assignee: Individual
•
Filing: 1955-08-30
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Granted: 1957-12-31
•
Expires: 1975-08-30
Abstract
No abstract record available.
Inventors
- 👤 Marcel J Foch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:35
CPC Classifications
F; F21; F21V; F21V23/00; F21V23/06; F21L; F21L14/00; F21L14/02; F21W; F21W2121/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1655700A
Cited
US689937A
Cited
US1330974A
Cited
US1331320A
Cited
US1442648A
Cited
US2302248A
Cited
US2628339A
Cited
US2599295A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-30 | 1961-07-01 | 1961-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-30 | 1965-07-01 | 1965-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-30 | 1969-07-01 | 1969-12-31 | $7700.00 | Window Closed / Lapsed |