US2873597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for sealing a pressure vessel
Assignee: Individual
•
Filing: 1955-08-08
•
Granted: 1959-02-17
•
Expires: 1975-08-08
Abstract
No abstract record available.
Inventors
- 👤 Victor T Fahringer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:44
CPC Classifications
D; D06; D06B; D06B23/00; D06B23/14; D06B23/18; D06B23/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1819051A
Cited
US890252A
Cited
US1957937A
Cited
US2084367A
Cited
US2276605A
Cited
US2289753A
Cited
US2367174A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |