US2471956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torque equalizing braking apparatus
Assignee: Individual
•
Filing: 1945-04-02
•
Granted: 1949-05-31
•
Expires: 1965-04-02
Abstract
No abstract record available.
Inventors
- 👤 James W F Holl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:12
CPC Classifications
F; F16; F16D; F16D55/00; F16D55/24; F16D55/26; F16D65/00; F16D65/02; F16D2065/024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR510993A
Cited
US1502111A
Cited
GB226938A
Cited
US1639320A
Cited
US1523795A
Cited
US1718021A
Cited
US2109722A
Cited
US2020809A
Cited
US2063444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-30 | 1952-11-29 | 1953-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-30 | 1956-11-29 | 1957-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-30 | 1960-11-29 | 1961-05-31 | $7700.00 | Window Closed / Lapsed |