US2601076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic fluid mixture clutch
Assignee: Individual
•
Filing: 1949-03-28
•
Granted: 1952-06-17
•
Expires: 1969-03-28
Abstract
No abstract record available.
Inventors
- 👤 Martin P Winther
- 👤 Winther Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:21
CPC Classifications
F; F16; F16D; F16D37/00; F16D37/02; F16D2037/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-17 | 1955-12-17 | 1956-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-17 | 1959-12-17 | 1960-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-17 | 1963-12-17 | 1964-06-17 | $7700.00 | Window Closed / Lapsed |