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US2490931A
Expired / Lapsed
US
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Self-locking device for linemen's body belts
Assignee: Individual
•
Filing: 1947-03-12
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Granted: 1949-12-13
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Expires: 1967-03-12
Abstract
No abstract record available.
Inventors
- 👤 Albert N Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:00
CPC Classifications
F; F16; F16B; F16B45/00; F16B45/02; F16B45/024; F16B45/026; F16B45/023; F16B45/027; F16B45/028
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-12 | 1953-06-13 | 1953-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-12 | 1957-06-13 | 1957-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-12 | 1961-06-13 | 1961-12-13 | $7700.00 | Window Closed / Lapsed |