Patent US3009531A successfully refreshed from Google Patents.
US3009531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Muffler
Assignee: Individual
•
Filing: 1958-08-01
•
Granted: 1961-11-21
•
Expires: 1978-08-01
Abstract
No abstract record available.
Inventors
- 👤 Theodore E Mead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:10
CPC Classifications
B; B25; B25D; B25D17/00; B25D17/11; B25D17/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US291762A
Cited
US503534A
Cited
US734749A
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US1497553A
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US2152205A
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US2643731A
Cited
US2773553A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-20 | 1965-05-22 | 1965-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-20 | 1969-05-22 | 1969-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-20 | 1973-05-22 | 1973-11-21 | $7700.00 | Window Closed / Lapsed |