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Patent US3496875A successfully refreshed from Google Patents.
US3496875A
Expired / Lapsed
US
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Hydraulic pump
Assignee: Greenlee Brothers and Co
•
Filing: 1967-11-16
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Granted: 1970-02-24
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Expires: 1987-11-16
Abstract
No abstract record available.
Inventors
- 👤 Richard F Van Allen
- 👤 Vernon W Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:21
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/02; F04B43/06; F04B43/067; F04B9/00; F04B9/02; F04B9/04; F04B9/042; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19623; Y10T74/19642; Y10T74/19688
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US999832A
Cited
AU231911B
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US2143573A
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US2218927A
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US2522633A
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US2650553A
Cited
US2900839A
Cited
US3153381A
Cited
US3304870A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |