US2670065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined brake and clutch for motor drives
Assignee: WALTER BALFOUR AND CO Inc
•
Filing: 1949-04-07
•
Granted: 1954-02-23
•
Expires: 1969-04-07
Abstract
No abstract record available.
Inventors
- 👤 Jr Herbert H Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:31
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/56; E06B9/68; E06B9/70; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/665; E06B9/74; E05F11/00; E05F11/54; E05Y; E05Y2201/00; E05Y2201/60; E05Y2201/622; E05Y2201/676; E05Y2800/00; E05Y2800/20; E05Y2800/23; E05Y2800/234; E05Y2900/00; E05Y2900/10; E05Y2900/106
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US822452A
Cited
US1444737A
Cited
US1668880A
Cited
US1833648A
Cited
FR715749A
Cited
US2390117A
Cited
US2417855A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |