US1670766A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Muffler
Assignee: BUFFALO PRESSED STEEL Co
•
Filing: 1924-03-13
•
Granted: 1928-05-22
•
Expires: 1944-03-13
Abstract
No abstract record available.
Inventors
- 👤 John H Gould
- 👤 Hyatt Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:53
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1838; F01N1/00; F01N1/08; F01N13/1844; F01N13/185; F01N2260/00; F01N2260/18; F01N2450/00; F01N2450/20; F01N2470/00; F01N2470/02; F01N2470/10; F01N2470/24
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) | 1931-05-22 | 1931-11-21 | 1932-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-05-22 | 1935-11-21 | 1936-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-05-22 | 1939-11-21 | 1940-05-22 | $7700.00 | Window Closed / Lapsed |