US2229119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Venturi silencer
Assignee: American Locomotive Co
•
Filing: 1939-09-20
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Granted: 1941-01-21
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Expires: 1959-09-20
Abstract
No abstract record available.
Inventors
- 👤 William M Nichols
- 👤 Albert C Cavileer
- 👤 Paul M Kochensperger
- 👤 Aue George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:09
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/0027; F04B39/0055; F02; F02B; F02B33/00; F02M; F02M2700/00; F02M2700/33; F02M2700/331
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) | 1944-01-21 | 1944-07-22 | 1945-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-01-21 | 1948-07-22 | 1949-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-01-21 | 1952-07-22 | 1953-01-21 | $7700.00 | Window Closed / Lapsed |