US3420147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lever device
Assignee: Combustion Engineering Inc
•
Filing: 1966-07-20
•
Granted: 1969-01-07
•
Expires: 1986-07-20
Abstract
No abstract record available.
Inventors
- 👤 Richard G Beach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:10
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/0616; G05D16/0619; F; F16; F16H; F16H51/00; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2409; Y10T137/2452; Y10T403/00; Y10T403/22; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/1892; Y10T74/18968; Y10T74/20; Y10T74/20012; Y10T74/20201; Y10T74/20576; Y10T74/20582
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1425412A
Cited
US2202405A
Cited
US2426653A
Cited
GB765539A
Cited
US3047002A
Cited
US2960098A
Cited
US3354722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |