Patent US2426577A successfully refreshed from Google Patents.
Patent US2938347A successfully refreshed from Google Patents.
US2938347A
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Power source for hydraulically operated devices
Assignee: Individual
•
Filing: 1957-10-30
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Granted: 1960-05-31
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Expires: 1977-10-30
Abstract
No abstract record available.
Inventors
- 👤 Malcolm B Sturgis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:07
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/06; F15B11/072; F15B11/0725; F01; F01L; F01L25/00; F01L25/02; F01L25/04; F01L25/06; F01L25/063; F04; F04B; F04B9/00; F04B9/08; F04B9/12; F04B9/129; F04B9/131; F04B9/133; F15B1/00; F15B1/26; F15B2211/00; F15B2211/20; F15B2211/21; F15B2211/212; F15B2211/214; F15B2211/216; F15B2211/30; F15B2211/305; F15B2211/3056; F15B2211/30565; F15B2211/32; F15B2211/329; F15B2211/50; F15B2211/505; F15B2211/50509; F15B2211/50518; F15B2211/50554; F15B2211/515; F15B2211/5151; F15B2211/5153; F15B2211/60; F15B2211/615; F15B2211/62; F15B2211/80; F15B2211/885; F15B2211/8855; Y; Y10; Y10S; Y10S60/00; Y10S60/916
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2329709A
Cited
US2461580A
Cited
US2520426A
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US2573993A
Cited
US2638915A
Cited
US2813398A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |