Patent US3018841A successfully refreshed from Google Patents.
US3018841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Muffler
Assignee: Individual
•
Filing: 1960-01-04
•
Granted: 1962-01-30
•
Expires: 1980-01-04
Abstract
No abstract record available.
Inventors
- 👤 Gerlich Stephen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:59
CPC Classifications
F; F01; F01N; F01N1/00; F01N1/08; F01N1/081; F01N1/12; Y; Y10; Y10S; Y10S55/00; Y10S55/20; Y10S55/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189824148A
Cited
US877840A
Cited
US1264853A
Cited
US1274943A
Cited
US2075316A
Cited
FR809108A
Cited
US2106482A
Cited
US2330534A
Cited
US2392559A
Cited
US2552615A
Cited
FR1174509A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-29 | 1965-07-31 | 1966-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-29 | 1969-07-31 | 1970-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-29 | 1973-07-31 | 1974-01-30 | $7700.00 | Window Closed / Lapsed |