US2969740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump control
Assignee: American Crucible Products Co
•
Filing: 1957-05-27
•
Granted: 1961-01-31
•
Expires: 1977-05-27
Abstract
No abstract record available.
Inventors
- 👤 Herbert W Kaatz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:00
CPC Classifications
F; F04; F04D; F04D15/00; F04D15/02; F04D15/0209; F04D13/00; F04D13/02; F04D13/06; F04D13/08; F04D13/086; F04D15/0218
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2488506A
Cited
US2635546A
Cited
US2787960A
Cited
US2730591A
Cited
US2804516A
Cited
US2834845A
Cited
US2922854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |