Patent US2854368A successfully refreshed from Google Patents.
US3545179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silencer
Assignee: Nelson Muffler Corp
•
Filing: 1968-06-25
•
Granted: 1970-12-08
•
Expires: 1988-06-25
Abstract
No abstract record available.
Inventors
- 👤 Ralph H Nelson
- 👤 Eddy J Seils
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:04
CPC Classifications
F; F01; F01N; F01N1/00; F01N1/08; F01N1/086; F01N1/088; F01N3/00; F01N3/02; F01N3/037; F01N3/06; F01N2230/00; F01N2230/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US223403A
Cited
US887893A
Cited
US1899911A
Cited
US2329101A
Cited
US2322414A
Cited
US2511190A
Cited
US2560077A
Cited
FR1059584A
Cited
US2730193A
Cited
US3239317A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |