US3433166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotating vane machine couplings
Assignee: TDK Micronas GmbH
•
Filing: 1967-09-11
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Granted: 1969-03-18
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Expires: 1987-09-11
Abstract
No abstract record available.
Inventors
- 👤 Henry Paul Birkemeier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:06
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/008; F01C21/08; F01C21/0809; F01C21/10; F01C21/104; F01C21/108; F05; F05B; F05B2280/00; F05B2280/60; F05C; F05C2203/00; F05C2225/00; F05C2225/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2558837A
Cited
US2605715A
Cited
US2759423A
Cited
US2764100A
Cited
US2833465A
Cited
US3282222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-17 | 1972-09-16 | 1973-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-17 | 1976-09-16 | 1977-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-17 | 1980-09-16 | 1981-03-18 | $7700.00 | Window Closed / Lapsed |