US2764049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Positive grip friction wrench
Assignee: Individual
•
Filing: 1955-02-01
•
Granted: 1956-09-25
•
Expires: 1975-02-01
Abstract
No abstract record available.
Inventors
- 👤 Richard S Hartung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:22
CPC Classifications
B; B25; B25B; B25B13/00; B25B13/46; B25B13/461; B25B13/462; B25B13/10; B25B13/12; B25B13/16; B25B13/467
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190803791A
Cited
US949248A
Cited
US1664391A
Cited
GB387590A
Cited
DE599682C
Cited
US2303579A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |