US2818131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Muffler
Assignee: Motors Liquidation Co
•
Filing: 1954-05-07
•
Granted: 1957-12-31
•
Expires: 1974-05-07
Abstract
No abstract record available.
Inventors
- 👤 Robert T Doughty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:19
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/005; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US395607A
Cited
US481727A
Cited
US984890A
Cited
US1465904A
Cited
US1885062A
Cited
US2084435A
Cited
US2455305A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-30 | 1961-07-01 | 1961-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-30 | 1965-07-01 | 1965-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-30 | 1969-07-01 | 1969-12-31 | $7700.00 | Window Closed / Lapsed |