Patent US2720128A successfully refreshed from Google Patents.
US2720128A
Expired / Lapsed
US
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Gripping dies for pipe tongs and the like
Assignee: Individual
•
Filing: 1953-05-25
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Granted: 1955-10-11
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Expires: 1973-05-25
Abstract
No abstract record available.
Inventors
- 👤 Ned S Woolley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:02
CPC Classifications
B; B25; B25B; B25B13/00; B25B13/48; B25B13/50; B25B13/5008; B25B13/5016; B25B13/5025; B25B13/5041; B25B13/505; B25B7/00; B25B7/02; E; E21; E21B; E21B19/00; E21B19/16; E21B19/161
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) | 1958-10-10 | 1959-04-11 | 1959-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-10 | 1963-04-11 | 1963-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-10 | 1967-04-11 | 1967-10-11 | $7700.00 | Window Closed / Lapsed |