US2607197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sequential motor operation under control of individual, fluid actuated, relieved pressure valves
Assignee: KELLER TOOL CO
•
Filing: 1949-08-06
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Granted: 1952-08-19
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Expires: 1969-08-06
Abstract
No abstract record available.
Inventors
- 👤 George S Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:23
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/16; F15B11/20; B; B23; B23Q; B23Q5/00; B23Q5/22; B23Q5/26; F16; F16H; F16H61/00; F16H61/02; F16H61/0262; F16H61/0265; F16H61/0267; F16H61/0269; Y; Y10; Y10T; Y10T408/00; Y10T408/16; Y10T408/165; Y10T408/36; Y10T408/385; Y10T408/65; Y10T408/675; Y10T408/6757; Y10T82/00; Y10T82/25; Y10T82/2531; Y10T82/2533
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1787781A
Cited
US2176008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |