Patent US2834504A successfully refreshed from Google Patents.
US2834504A
Expired / Lapsed
US
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Pressure vessel locking mechanism
Assignee: Individual
•
Filing: 1954-11-10
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Granted: 1958-05-13
•
Expires: 1974-11-10
Abstract
No abstract record available.
Inventors
- 👤 Annicq Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:02
CPC Classifications
B; B01; B01J; B01J3/00; B01J3/03; F; F16; F16J; F16J13/00; F16J13/02; F16J13/06; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/1039; Y10T292/1043; Y10T292/1075; Y10T292/1082; Y10T292/20; Y10T292/221; Y10T292/223
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |