US2440326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-drying apparatus
Assignee: Westinghouse Air Brake Co
•
Filing: 1945-01-24
•
Granted: 1948-04-27
•
Expires: 1965-01-24
Abstract
No abstract record available.
Inventors
- 👤 Cadman Norman Geoffrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:18
CPC Classifications
F; F26; F26B; F26B21/00; F26B21/30; F26B21/33; F26B21/331; B; B01; B01D; B01D53/00; B01D53/26; B60; B60T; B60T17/00; B60T17/002; B60T17/004; Y; Y10; Y10S; Y10S55/00; Y10S55/17
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2079100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-27 | 1951-10-27 | 1952-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-27 | 1955-10-27 | 1956-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-27 | 1959-10-27 | 1960-04-27 | $7700.00 | Window Closed / Lapsed |