US1810252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust muffler for internal combustion engines
Assignee: Individual
•
Filing: 1930-03-17
•
Granted: 1931-06-16
•
Expires: 1950-03-17
Abstract
No abstract record available.
Inventors
- 👤 Albert S Noonan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:59
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1838; F01N1/00; F01N1/08; F01N1/083; F01N13/1844; F01N2260/00; F01N2260/18; F01N2450/00; F01N2450/20; F01N2450/22; F01N2470/00; F01N2470/26; F01N2490/00; F01N2490/08; F01N2490/14
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) | 1934-06-15 | 1934-12-15 | 1935-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-06-15 | 1938-12-15 | 1939-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-06-15 | 1942-12-15 | 1943-06-16 | $7700.00 | Window Closed / Lapsed |