US3392631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam engine
Assignee: Individual
•
Filing: 1966-08-11
•
Granted: 1968-07-16
•
Expires: 1986-08-11
Abstract
No abstract record available.
Inventors
- 👤 William E Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:05
CPC Classifications
F; F01; F01B; F01B1/00; F01B1/06; F01B1/0675; F01B1/0696; F01B1/0641; F01B1/0668; F01B13/00; F01B13/04; F01B13/06; F01B13/061; F01B13/063; F01B13/065; F01B13/066; F03; F03C; F03C1/00; F03C1/02; F03C1/04; F03C1/0403; F03C1/0435; F03C1/0438
Claims Analysis
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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) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |