Patent US1422902A successfully refreshed from Google Patents.
US1422902A
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US
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Starting and unloading device
Assignee: Westinghouse Air Brake Co
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Filing: 1919-11-13
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Granted: 1922-07-18
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Expires: 1939-11-13
Abstract
No abstract record available.
Inventors
- 👤 Frank B Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:52
CPC Classifications
F; F02; F02N; F02N19/00; F02N19/001; B; B60; B60W; B60W10/00; B60W10/04; B60W10/10; B60W10/101; B60W10/103
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) | 1925-07-17 | 1926-01-16 | 1926-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-07-17 | 1930-01-16 | 1930-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-07-17 | 1934-01-16 | 1934-07-18 | $7700.00 | Window Closed / Lapsed |