Patent US3209862A successfully refreshed from Google Patents.
US3209862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic coated muffler and process
Assignee: Walker Manufacturing Co
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Filing: 1964-01-09
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Granted: 1965-10-05
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Expires: 1984-01-09
Abstract
No abstract record available.
Inventors
- 👤 James R Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:45
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1838; F01N13/16; F01N2470/00; F01N2470/02; F01N2470/10; F01N2490/00; F01N2490/02; F01N2510/00; F01N2510/08; F01N2530/00; F01N2530/02; F01N2530/04; F01N2530/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
IN AN EXHAUST MUFFLER CONSTRUCTION, AN ELONGATED HOLLOW SHELL, INLET AND OUTLET HEADERS CLOSING THE ENDS OF SAID SHELL, SAID HEADERS AND SAID SHELL HAVING A CORROSION-RESISTANT PRECOATING MATERIAL APPLIED TO AT LEAST A PORTION OF THE MUTUALLY ADJACENT SURFACES THEREO, SAID PRECOATING MATERIAL SERVING TO BOND SAID HEADERS AND SAID SHELL TOGETHER, AND SAID SHELL AND SAID HEADERS HAVING A THIN LAYER OF
Claim 2
Dependent Claim
64 words
IN AN EXHAUST MUFFLER CONSTRUCTION, AN ELONGATED HOLLOW SHELL, INLET AND OUTLET HEADERS CLOSING THE ENDS OF SAID SHELL, SAID HEADERS AND SAID SHELL HAVING A CORROSION-RESISTANT PRECOATING MATERIAL APPLIED TO AT LEAST A PORTION OF THE MUTUALLY ADJACENT SURFACES THEREO, SAID PRECOATING MATERIAL SERVING TO BOND SAID HEADERS AND SAID SHELL TOGETHER, AND SAID SHELL AND SAID HEADERS HAVING A THIN LAYER OF
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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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |