Patent US2608639A successfully refreshed from Google Patents.
US2608639A
Expired / Lapsed
US
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Portable lantern having contact accommodating a single lantern battery or a plurality of flashlight cells
Assignee: Justrite Manufacturing Co
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Filing: 1950-03-21
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Granted: 1952-08-26
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Expires: 1970-03-21
Abstract
No abstract record available.
Inventors
- 👤 Charles S Packer
- 👤 Marvin R Olsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:29
CPC Classifications
F; F21; F21L; F21L4/00; F21L4/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1122778A
Cited
US1487429A
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US1825354A
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US2053591A
Cited
US2074536A
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US2137230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-26 | 1956-02-25 | 1956-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-26 | 1960-02-25 | 1960-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-26 | 1964-02-25 | 1964-08-26 | $7700.00 | Window Closed / Lapsed |