US3052204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric motor-propeller unit mounting and control means
Assignee: Individual
•
Filing: 1960-11-07
•
Granted: 1962-09-04
•
Expires: 1980-11-07
Abstract
No abstract record available.
Inventors
- 👤 Herschell R Scivally
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:26
CPC Classifications
B; B63; B63H; B63H23/00; B63H23/22; B63H23/24; B63H20/00; B63H20/007
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-03 | 1966-03-05 | 1966-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-03 | 1970-03-05 | 1970-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-03 | 1974-03-05 | 1974-09-04 | $7700.00 | Window Closed / Lapsed |