US2570369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Humidifier for internal-combustion engines
Assignee: Individual
•
Filing: 1949-08-01
•
Granted: 1951-10-09
•
Expires: 1969-08-01
Abstract
No abstract record available.
Inventors
- 👤 Walton D Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:50
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/02; F02M35/04; F02M35/042; F02M25/00; F02M25/022; F02M25/0221; F02M25/0225; F02M25/025; F02M25/028; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7498; Y10T137/794
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US492296A
Cited
US1414993A
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US1497367A
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US1575292A
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US2040376A
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US2537495A
Cited
US2435798A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-08 | 1955-04-09 | 1955-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-08 | 1959-04-09 | 1959-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-08 | 1963-04-09 | 1963-10-09 | $7700.00 | Window Closed / Lapsed |