US3028814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed variable displacement pump
Assignee: Houdaille Industries Inc
•
Filing: 1957-10-17
•
Granted: 1962-04-10
•
Expires: 1977-10-17
Abstract
No abstract record available.
Inventors
- 👤 Rumsey Rollin Douglas
- 👤 Emmett C Manning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:50
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/22; F04B49/24; F04B1/00; F04B1/04; F04B1/0404; F04B1/0439; F04B1/0452; F04B1/0465; F04B1/06; F04B1/07; F04B1/08; F04B1/10; F04B1/107; F04B1/1071; F04B49/10; F04B49/12; F04B49/123; F04B49/128
Claims Analysis
Total Claims: 0
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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) | 1965-04-09 | 1965-10-09 | 1966-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-09 | 1969-10-09 | 1970-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-09 | 1973-10-09 | 1974-04-10 | $7700.00 | Window Closed / Lapsed |