US3158172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-temperature, high-pressure spherical segment valve
Assignee: Individual
•
Filing: 1960-08-02
•
Granted: 1964-11-24
•
Expires: 1980-08-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Angelo Giovannetti
- 👤 Russel M Himmelright
- 👤 Kenneth A Meyer
- 👤 Nitta Hakuzo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:36
CPC Classifications
G; G01; G01M; G01M9/00; G01M9/02; G01M9/04; F; F16; F16K; F16K5/00; F16K5/06; F16K5/0621; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6579
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1442452A
Cited
US1586725A
Cited
CH135288A
Cited
US1951677A
Cited
US2467945A
Cited
US2811981A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |