US3472350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically operated friction clutch of the dual actuating chamber type having a sequencing valve
Assignee: Twin Disc Inc
•
Filing: 1968-01-19
•
Granted: 1969-10-14
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Expires: 1988-01-19
Abstract
No abstract record available.
Inventors
- 👤 Martin Lee Overson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:15
CPC Classifications
F; F16; F16D; F16D21/00; F16D21/02; F16D21/06; F16D25/00; F16D25/10; F16D25/06; F16D25/062; F16D25/063; F16D25/0635; F16D25/0638; Y; Y02; Y02T; Y02T10/00; Y02T10/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2320960A
Cited
US2632544A
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US2740512A
Cited
US2864479A
Cited
US2954040A
Cited
US2925159A
Cited
US3273415A
Cited
US3378111A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-13 | 1973-04-14 | 1973-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-13 | 1977-04-14 | 1977-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-13 | 1981-04-14 | 1981-10-14 | $7700.00 | Window Closed / Lapsed |