US2070543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Muffler
Assignee: HAYES IND Inc
•
Filing: 1936-01-13
•
Granted: 1937-02-09
•
Expires: 1956-01-13
Abstract
No abstract record available.
Inventors
- 👤 Beecher B Cary
- 👤 Hollerith Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:02
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N1/00; F01N1/02; F01N1/08; F01N1/084; F01N2260/00; F01N2260/18; F01N2450/00; F01N2450/22; F01N2470/00; F01N2470/02; F01N2470/06; F01N2470/10; F01N2490/00; F01N2490/15; F01N2490/155
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) | 1940-02-09 | 1940-08-10 | 1941-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-02-09 | 1944-08-10 | 1945-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-02-09 | 1948-08-10 | 1949-02-09 | $7700.00 | Window Closed / Lapsed |