US2670797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gripper
Assignee: Individual
•
Filing: 1948-10-07
•
Granted: 1954-03-02
•
Expires: 1968-10-07
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Armentrout
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:00
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/1208; E21B23/00; E21B23/01; E21B33/1204; E21B33/1216; E21B33/129; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44641; Y10T24/44684; Y10T24/44692; Y10T279/00; Y10T279/10; Y10T279/1037; Y10T279/1041; Y10T279/1045; Y10T279/1066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1926017A
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US1935147A
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US2264480A
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US2257987A
Cited
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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) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |