Patent US2620122A successfully refreshed from Google Patents.
US2620122A
Expired / Lapsed
US
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Combination propeller and diffuser inlet assembly
Assignee: Individual
•
Filing: 1945-10-09
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Granted: 1952-12-02
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Expires: 1965-10-09
Abstract
No abstract record available.
Inventors
- 👤 Herman H Curry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:08
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/04
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) | 1955-12-02 | 1956-06-02 | 1956-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-02 | 1960-06-02 | 1960-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-02 | 1964-06-02 | 1964-12-02 | $7700.00 | Window Closed / Lapsed |