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Patent US2768501A successfully refreshed from Google Patents.
US2768501A
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Fluid control system for torus chamber type hydraulic couplings
Assignee: JM Voith GmbH
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Filing: 1952-04-10
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Granted: 1956-10-30
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Expires: 1972-04-10
Abstract
No abstract record available.
Inventors
- 👤 Muller Helmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:28
CPC Classifications
F; F16; F16D; F16D33/00; F16D33/06; F16D33/08; F16D33/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2049673A
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US2423812A
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US2289440A
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US2459734A
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US2508442A
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US2582952A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-30 | 1960-04-30 | 1960-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-30 | 1964-04-30 | 1964-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-30 | 1968-04-30 | 1968-10-30 | $7700.00 | Window Closed / Lapsed |