Patent US3600927A successfully refreshed from Google Patents.
Patent US2708714A successfully refreshed from Google Patents.
US2708714A
Expired / Lapsed
US
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Portable lamp and interchangeable cage therefor
Assignee: Whitney Blake Co
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Filing: 1953-04-02
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Granted: 1955-05-17
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Expires: 1973-04-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles H Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:06
CPC Classifications
F; F21; F21L; F21L14/00; F21L14/02; F21V; F21V17/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1314846A
Cited
USRE20033E
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US1976362A
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US2096604A
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US2202315A
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US2209931A
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US2286891A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-16 | 1958-11-15 | 1959-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-16 | 1962-11-15 | 1963-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-16 | 1966-11-15 | 1967-05-17 | $7700.00 | Window Closed / Lapsed |