US2433221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm
Assignee: New York Air Brake LLC
•
Filing: 1945-08-09
•
Granted: 1947-12-23
•
Expires: 1965-08-09
Abstract
No abstract record available.
Inventors
- 👤 Matthew W Huber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:34
CPC Classifications
F; F16; F16J; F16J3/00; F16J3/02; B; B60; B60T; B60T17/00; B60T17/08; Y; Y10; Y10S; Y10S33/00; Y10S33/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1132424A
Cited
US1819947A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-22 | 1951-06-23 | 1951-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-22 | 1955-06-23 | 1955-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-22 | 1959-06-23 | 1959-12-23 | $7700.00 | Window Closed / Lapsed |