US3015212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump control
Assignee: Thompson Grinder Co
•
Filing: 1959-12-31
•
Granted: 1962-01-02
•
Expires: 1979-12-31
Abstract
No abstract record available.
Inventors
- 👤 Frederick G Krafft
- 👤 Ernst Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:59
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/18; F04C14/22; F04C14/223; B; B24; B24B; B24B47/00; B24B47/02; B24B47/06; F04B; F04B49/00; F04B49/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2238061A
Cited
US2436986A
Cited
US2501165A
Cited
US2600632A
Cited
US2612114A
Cited
US2921439A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |