US2824554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for rotating valves
Assignee: Individual
•
Filing: 1956-01-31
•
Granted: 1958-02-25
•
Expires: 1976-01-31
Abstract
No abstract record available.
Inventors
- 👤 Achilles C Sampietro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:19
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR562884A
Cited
FR880483A
Cited
US2641236A
Cited
US2664075A
Cited
GB688597A
Cited
US2589418A
Cited
US2664076A
Cited
US2742029A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-24 | 1961-08-26 | 1962-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-24 | 1965-08-26 | 1966-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-24 | 1969-08-26 | 1970-02-25 | $7700.00 | Window Closed / Lapsed |