Patent US2314337A successfully refreshed from Google Patents.
Patent US2439458A successfully refreshed from Google Patents.
US2439458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure control mechanism for airplane deicers
Assignee: Bendix Westinghouse Automotive Air Brake Co
•
Filing: 1943-04-30
•
Granted: 1948-04-13
•
Expires: 1963-04-30
Abstract
No abstract record available.
Inventors
- 👤 Wilfred A Eaton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:38
CPC Classifications
B; B64; B64D; B64D15/00; B64D15/16; Y; Y10; Y10T; Y10T137/00; Y10T137/1189; Y10T137/8593; Y10T137/86389; Y10T137/86405; Y10T137/86413
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1794690A
Cited
GB449532A
Cited
US2182530A
Cited
US2182547A
Cited
US2358804A
Cited
US2338574A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-13 | 1951-10-13 | 1952-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-13 | 1955-10-13 | 1956-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-13 | 1959-10-13 | 1960-04-13 | $7700.00 | Window Closed / Lapsed |