Patent US2931388A successfully refreshed from Google Patents.
US2931388A
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US
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Electro hydraulic control mechanism
Assignee: American Brake Shoe Co
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Filing: 1953-12-30
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Granted: 1960-04-05
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Expires: 1973-12-30
Abstract
No abstract record available.
Inventors
- 👤 Wendell E Renick
- 👤 Kenneth C Goodman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:36
CPC Classifications
F; F15; F15B; F15B21/00; F15B21/08; F16; F16K; F16K31/00; F16K31/12; F16K31/42; F16K31/423; F16K31/426
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1955154A
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US2489799A
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US2416097A
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US2600702A
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US2655902A
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US2655940A
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US2709421A
Cited
US2722198A
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US2777425A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |