Patent US2132425A successfully refreshed from Google Patents.
US2132425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Muffler
Assignee: Individual
•
Filing: 1936-06-22
•
Granted: 1938-10-11
•
Expires: 1956-06-22
Abstract
No abstract record available.
Inventors
- 👤 George P List
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:04
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1872; F01N13/1877; F01N1/00; F01N1/06; F01N13/16; F01N13/1888; F01N2450/00; F01N2450/22; F01N2470/00; F01N2470/06; F01N2470/30; F01N2530/00; F01N2530/02; F01N2530/06
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) | 1941-10-10 | 1942-04-11 | 1942-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-10-10 | 1946-04-11 | 1946-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-10-10 | 1950-04-11 | 1950-10-11 | $7700.00 | Window Closed / Lapsed |