US2937707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Muffler for silencing gases
Assignee: Individual
•
Filing: 1955-12-06
•
Granted: 1960-05-24
•
Expires: 1975-12-06
Abstract
No abstract record available.
Inventors
- 👤 Ernst Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:33
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N1/00; F01N1/06; F01N1/24; F01N13/009; F01N13/0097; F01N2310/00; F01N2310/02; F01N2450/00; F01N2450/22; F01N2470/00; F01N2470/02; F01N2470/18; F01N2490/00; F01N2490/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1076494A
Cited
US1688488A
Cited
US2075263A
Cited
US1878424A
Cited
US2036138A
Cited
US2148948A
Cited
US2047442A
Cited
US2202272A
Cited
US2382159A
Cited
US2600262A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |