Patent US2561167A successfully refreshed from Google Patents.
US2561167A
Expired / Lapsed
US
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Expansion unit to compensate for temperature changes in a vehicle hydraulic drive system
Assignee: Individual
•
Filing: 1946-01-28
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Granted: 1951-07-17
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Expires: 1966-01-28
Abstract
No abstract record available.
Inventors
- 👤 William E Beaman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:23
CPC Classifications
B; B60; B60K; B60K17/00; B60K17/04; B60K17/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2228411A
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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) | 1954-07-16 | 1955-01-15 | 1955-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-16 | 1959-01-15 | 1959-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-16 | 1963-01-15 | 1963-07-17 | $7700.00 | Window Closed / Lapsed |