US3384026A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump apparatus
Assignee: TDK Micronas GmbH
•
Filing: 1966-08-16
•
Granted: 1968-05-21
•
Expires: 1986-08-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Gilbert D Williamson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:35
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/18; F04D29/22; F04D29/2238; F04D29/2244
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US918559A
Cited
US1763595A
Cited
US2201947A
Cited
US2635548A
Cited
US2456128A
Cited
US3171357A
Cited
US3130678A
Cited
US3167021A
Cited
US3190226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |