US2833368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Muffler
Assignee: United Specialties Co
•
Filing: 1956-05-17
•
Granted: 1958-05-06
•
Expires: 1976-05-17
Abstract
No abstract record available.
Inventors
- 👤 Wilfred W Lowther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:17
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1838; F01N13/08; F01N13/10; F01N13/1844; F01N13/1855; F01N2450/00; F01N2450/22; F01N2450/24; F01N2470/00; F01N2470/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |