Patent US1700394A successfully refreshed from Google Patents.
US1700394A
Expired / Lapsed
US
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Air-exhaust mechanism for hydraulic circuits
Assignee: Oilgear Co
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Filing: 1924-03-15
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Granted: 1929-01-29
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Expires: 1944-03-15
Abstract
No abstract record available.
Inventors
- 👤 Lawrence F Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:52
CPC Classifications
F; F15; F15B; F15B21/00; F15B21/04; F15B21/044; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3084; Y10T137/3087
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1932-01-29 | 1932-07-30 | 1933-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-01-29 | 1936-07-30 | 1937-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-01-29 | 1940-07-30 | 1941-01-29 | $7700.00 | Window Closed / Lapsed |