US2679808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure generator
Assignee: Individual
•
Filing: 1949-04-22
•
Granted: 1954-06-01
•
Expires: 1969-04-22
Abstract
No abstract record available.
Inventors
- 👤 Bernard M Thun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:24
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/04; F04B1/0404; F04B1/0426; F04B1/0408; F04B1/053
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US184586A
Cited
US1234878A
Cited
GB384386A
Cited
US2382452A
Cited
US2186322A
Cited
US2309551A
Cited
US2381910A
Cited
US2461235A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |