US2591112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vest pocket flashlight, including electric system and lock subassembly
Assignee: Individual
•
Filing: 1948-04-27
•
Granted: 1952-04-01
•
Expires: 1968-04-27
Abstract
No abstract record available.
Inventors
- 👤 Zwierzynski Alex
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:15
CPC Classifications
F; F21; F21L; F21L4/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE361691C
Cited
US1226727A
Cited
US1588464A
Cited
GB189053A
Cited
US1918347A
Cited
GB494810A
Cited
US2272040A
Cited
US2329063A
Cited
US2465114A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |