US2737260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smogless air mufflers
Assignee: Individual
•
Filing: 1954-05-10
•
Granted: 1956-03-06
•
Expires: 1974-05-10
Abstract
No abstract record available.
Inventors
- 👤 Jenison George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:35
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/02; F01N3/05; F01N3/021; F01N3/022; F01N3/033; F01N3/0335; F01N3/04; F01N2230/00; F01N2230/02; F01N2330/00; F01N2330/08; F01N2370/00; F01N2370/22; 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)
GB191028049A
Cited
US1179145A
Cited
US1479714A
Cited
US1843999A
Cited
GB312200A
Cited
US1919626A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-06 | 1959-09-05 | 1960-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-06 | 1963-09-05 | 1964-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-06 | 1967-09-05 | 1968-03-06 | $7700.00 | Window Closed / Lapsed |