US3473477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary pump
Assignee: Motors Liquidation Co
•
Filing: 1968-02-26
•
Granted: 1969-10-21
•
Expires: 1988-02-26
Abstract
No abstract record available.
Inventors
- 👤 Douglas K Thompson
- 👤 Roy Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:19
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/24; F04C14/26; F04C2/00; F04C2/08; F04C2/082; F04C2/084; F04C2/10; F04C2/102
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2785637A
Cited
US2391973A
Cited
US2509321A
Cited
US2669840A
Cited
US2697911A
Cited
US2956506A
Cited
US3072064A
Cited
US3298315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |