US3405604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of driving a screw engine power unit and a power unit to be driven according to such method
Assignee: Individual
•
Filing: 1966-05-11
•
Granted: 1968-10-15
•
Expires: 1986-05-11
Abstract
No abstract record available.
Inventors
- 👤 Lysholm Alf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:46
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/06; F01D; F01D1/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2459709A
Cited
US2362550A
Cited
US2467092A
Cited
US2782596A
Cited
US2696364A
Cited
US2801792A
Cited
GB832386A
Cited
US2975963A
Cited
GB947382A
Cited
US3307453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-15 | 1972-04-15 | 1972-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-15 | 1976-04-15 | 1976-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-15 | 1980-04-15 | 1980-10-15 | $7700.00 | Window Closed / Lapsed |