Patent US2748883A successfully refreshed from Google Patents.
US2748883A
Expired / Lapsed
US
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Muffler unit
Assignee: Individual
•
Filing: 1952-12-03
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Granted: 1956-06-05
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Expires: 1972-12-03
Abstract
No abstract record available.
Inventors
- 👤 Millard J Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:29
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1838; F01N13/1844; F01N1/00; F01N1/08; F01N1/082; F01N13/1888; F01N13/1894; F01N2310/00; F01N2310/02; F01N2310/14; F01N2450/00; F01N2450/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US912318A
Cited
GB351565A
Cited
US2233804A
Cited
FR853854A
Cited
US2261948A
Cited
US2280953A
Cited
US2523260A
Cited
US2499018A
Cited
US2640557A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |