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US2811378A
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Heavy tension load safety swivel
Assignee: Individual
•
Filing: 1953-12-15
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Granted: 1957-10-29
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Expires: 1973-12-15
Abstract
No abstract record available.
Inventors
- 👤 Kalista George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:25
CPC Classifications
F; F16; F16C; F16C19/00; F16C19/52; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32114; Y10T403/32163; Y10T403/32213
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1303714A
Cited
US1745310A
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US2384490A
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US2487085A
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US2457444A
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US2651533A
Cited
US2508237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |