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US2873636A
Expired / Lapsed
US
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Pipe wrenches
Assignee: Individual
•
Filing: 1958-03-03
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Granted: 1959-02-17
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Expires: 1978-03-03
Abstract
No abstract record available.
Inventors
- 👤 Loyd B Sherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:43
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/16; E21B19/161; Y; Y10; Y10T; Y10T279/00; Y10T279/19; Y10T279/1986
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1522804A
Cited
US2098369A
Cited
US2517366A
Cited
US2596880A
Cited
US2609720A
Cited
US2720128A
Cited
US2760395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |