Patent US2455845A successfully refreshed from Google Patents.
US2455845A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1944-05-22
•
Granted: 1948-12-07
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Expires: 1964-05-22
Abstract
No abstract record available.
Inventors
- 👤 Edward P Wells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:48
CPC Classifications
F; F42; F42B; F42B15/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US976732A
Cited
US1103503A
Cited
US1670641A
Cited
FR534801A
Cited
US1897092A
Cited
FR811712A
Cited
US2145507A
Cited
US2283863A
Cited
US2343074A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-07 | 1952-06-07 | 1952-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-07 | 1956-06-07 | 1956-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-07 | 1960-06-07 | 1960-12-07 | $7700.00 | Window Closed / Lapsed |