Patent US6077230A successfully refreshed from Google Patents.
US2933570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure sensitive pump control
Assignee: KENCO PUMP DIVISION OF AME
•
Filing: 1958-01-06
•
Granted: 1960-04-19
•
Expires: 1978-01-06
Abstract
No abstract record available.
Inventors
- 👤 Fred E Tutthill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:30
CPC Classifications
F; F04; F04D; F04D15/00; F04D15/02; F04D15/0209; F04D15/0218; H; H01; H01H; H01H3/00; H01H3/22; H01H3/24; H01H35/00; H01H35/24; H01H35/26; H01H35/30
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US247142A
Cited
US1184371A
Cited
US1799126A
Cited
US2495443A
Cited
US2635546A
Cited
US2687693A
Cited
US2765743A
Cited
US2767277A
Cited
US2804516A
Cited
US2834845A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |