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Patent US1919402A successfully refreshed from Google Patents.
US1919402A
Expired / Lapsed
US
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Steam driven fluid compressor
Assignee: Westinghouse Air Brake Co
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Filing: 1930-05-22
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Granted: 1933-07-25
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Expires: 1950-05-22
Abstract
No abstract record available.
Inventors
- 👤 Benjamin H Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:49
CPC Classifications
F; F04; F04B; F04B35/00; F04B35/008; F04B25/00; F04B9/00; F04B9/08; F04B9/12; F04B9/129; F04B9/1295; F04B9/131; F04B9/133
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) | 1936-07-24 | 1937-01-23 | 1937-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-07-24 | 1941-01-23 | 1941-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-07-24 | 1945-01-23 | 1945-07-25 | $7700.00 | Window Closed / Lapsed |