US2223044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressor governor
Assignee: Westinghouse Air Brake Co
•
Filing: 1939-03-31
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Granted: 1940-11-26
•
Expires: 1959-03-31
Abstract
No abstract record available.
Inventors
- 👤 Raymond E Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:41
CPC Classifications
B; B60; B60T; B60T17/00; B60T17/02; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2703; Y10T137/2705; Y10T137/7722; Y10T137/7738; Y10T137/7739; Y10T137/7758; Y10T137/7762; Y10T137/7764; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7931; Y10T137/8593; Y10T137/87917
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-11-26 | 1944-05-27 | 1944-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-11-26 | 1948-05-27 | 1948-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-11-26 | 1952-05-27 | 1952-11-26 | $7700.00 | Window Closed / Lapsed |