US2308059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust device for internal combustion engines
Assignee: Individual
•
Filing: 1941-04-03
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Granted: 1943-01-12
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Expires: 1961-04-03
Abstract
No abstract record available.
Inventors
- 👤 Ammiel F Decker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:59
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/20; F01N13/08; F01N13/082; F01N3/00; F01N3/02; F01N3/05; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2839; F01N3/30; F01N3/34; F01N2450/00; F01N2450/10; F01N2450/30; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S55/00; Y10S55/30
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) | 1946-01-11 | 1946-07-13 | 1947-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-01-11 | 1950-07-13 | 1951-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-01-11 | 1954-07-13 | 1955-01-12 | $7700.00 | Window Closed / Lapsed |