Patent US3221836A successfully refreshed from Google Patents.
US3221836A
Expired / Lapsed
US
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Muffler article and method of casting same
Assignee: Individual
•
Filing: 1964-03-04
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Granted: 1965-12-07
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Expires: 1984-03-04
Abstract
No abstract record available.
Inventors
- 👤 Kleinig Frank Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:43
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1861; B; B22; B22D; B22D19/00; F01N13/1838; F01N13/1844; F01N13/1855; F01N13/1888; F01N13/1894; F01N2310/00; F01N2310/02; F01N2450/00; F01N2450/24; F01N2450/30; F01N2470/00; F01N2470/02; F01N2470/24; F01N2470/28; F01N2530/00; F01N2530/02; F01N2530/04; F01N2530/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49398; Y10T29/49826; Y10T29/49879; Y10T29/4998; Y10T29/49988; Y10T29/49993
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
110 words
A SILENCER FOR A MOTOR VEHICLE COMPRISING A TUBULAR BODY OF CORROSION RESISTANT SHEET METAL; AN END TUBE EXTENDING SUBSTANTIALLY AXIALLY INTO THE INTERIOR OF SAID TUBULAR BODY AND SPACED FROM THE WALL THEREOF, SAID TUBULAR BODY HAVING AN END PORTION SURROUNDING AT LEAST A PART OF SAID END TUBE AND INCLUDING AN INTERIOR AND AN EXTERIOR SURFACE PORTION; AND AN ALUMINUM END COVER CAST AROUND SAID END TUBE AND INTO BINDING ENGAGEMENT WITH BOTH SAID INTERIOR AND SAID EXTERIOR SURFACE PORTIONS OF SAID END PORTION OF SAID TUBULAR BODY SO THAT SAID END TUBE IS FIXED RELATIVE TO SAID TUBULAR BODY AND PROVIDES A PASSAGE THROUGH SAID END COVER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |