US2960739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety line clamp for derrickmen
Assignee: Individual
•
Filing: 1958-03-31
•
Granted: 1960-11-22
•
Expires: 1978-03-31
Abstract
No abstract record available.
Inventors
- 👤 Jr Jacob A Warr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:55
CPC Classifications
A; A62; A62B; A62B35/00; A62B35/04; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/3936; Y10T24/394
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US78794A
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US382574A
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US461998A
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US626812A
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US697404A
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US1049642A
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US1032294A
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US1084379A
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US1300040A
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US1944603A
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US2607058A
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US2796953A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |