US2745435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically actuated ring diaphragm
Assignee: Hobbs Transmission Ltd
•
Filing: 1952-10-10
•
Granted: 1956-05-15
•
Expires: 1972-10-10
Abstract
No abstract record available.
Inventors
- 👤 Hobbs Howard Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:02
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/14; F16D65/16; F16D25/00; F16D25/04; F16D25/042; F16D25/044; F16D55/00; F16D55/24; F16D55/26; F16D2125/00; F16D2125/02; F16D2125/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US818828A
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US1273534A
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US1466242A
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US1465431A
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US2323052A
Cited
US2381393A
Cited
US2462944A
Cited
US2487117A
Cited
FR950819A
Cited
US2604197A
Cited
FR980605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |