US3021931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction clutch mechanism
Assignee: Massey Ferguson Inc
•
Filing: 1958-04-01
•
Granted: 1962-02-20
•
Expires: 1978-04-01
Abstract
No abstract record available.
Inventors
- 👤 Harold O Holz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:59
CPC Classifications
F; F16; F16D; F16D21/00; F16D21/02; F16D21/06; F16D2021/0684
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2899897A
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US1705032A
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US2057559A
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US2136049A
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DE662848C
Cited
US2195783A
Cited
FR864187A
Cited
DE897343C
Cited
FR1015291A
Cited
US2773575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |