US3393692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary shaft speed control
Assignee: Elliott Turbomachinery Co Inc
•
Filing: 1965-10-22
•
Granted: 1968-07-23
•
Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 Carl H Geary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:22
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/002; F01; F01D; F01D17/00; F01D17/20; F01D17/22; F01D17/26; G; G05; G05D; G05D13/00; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2229; Y10T137/2256
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1959889A
Cited
GB587895A
Cited
US2858700A
Cited
US3181546A
Cited
US3233522A
Cited
US3248043A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |