US2647656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid vessel
Assignee: Foster Wheeler Inc
•
Filing: 1948-04-14
•
Granted: 1953-08-04
•
Expires: 1968-04-14
Abstract
No abstract record available.
Inventors
- 👤 Frisch Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:27
CPC Classifications
F; F16; F16J; F16J13/00; F16J13/02; F16J13/10; B; B01; B01J; B01J3/00; B01J3/04; B01J2219/00; B01J2219/18; B01J2219/185; B01J2219/19; B01J2219/194; B01J2219/1941; B01J2219/1943
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB213355A
Cited
US1773199A
Cited
US1883662A
Cited
US2028967A
Cited
US1897213A
Cited
DE691144C
Cited
US2296620A
Cited
US2360391A
Cited
US2339876A
Cited
US2303114A
Cited
US2413308A
Cited
US2435251A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |