US2047443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Muffler
Assignee: BUFFALO PRESSED STEEL Co
•
Filing: 1936-03-09
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Granted: 1936-07-14
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Expires: 1956-03-09
Abstract
No abstract record available.
Inventors
- 👤 Gail C Starkweather
- 👤 Lucien L Haas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:58
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1838; F01N1/00; F01N1/003; F01N1/08; F01N1/086; F01N1/088; F01N13/007; F02; F02M; F02M35/00; F02M35/12; F02M35/1205; F02M35/1211; F02M35/1216; F02M35/1255; F02M35/1266; F01N2450/00; F01N2450/20; F01N2450/22; F01N2470/00; F01N2470/02; F01N2470/04; F01N2470/06; F01N2470/24; F01N2470/30; F01N2490/00; F01N2490/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49879
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) | 1939-07-14 | 1940-01-13 | 1940-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-07-14 | 1944-01-13 | 1944-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-07-14 | 1948-01-13 | 1948-07-14 | $7700.00 | Window Closed / Lapsed |