US3520392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overload responsive clutch and motor exhaust valve
Assignee: Gardner Denver Inc
•
Filing: 1968-05-16
•
Granted: 1970-07-14
•
Expires: 1988-05-16
Abstract
No abstract record available.
Inventors
- 👤 Edwin J Deremo
- 👤 Joseph F Carter
- 👤 William Workman Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:05
CPC Classifications
B; B25; B25B; B25B23/00; B25B23/14; B25B23/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2884103A
Cited
US3253662A
Cited
US3298481A
Cited
US3205986A
Cited
US3220526A
Cited
US3288258A
Cited
US3442362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |