US2998953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Panhead
Assignee: Individual
•
Filing: 1957-06-21
•
Granted: 1961-09-05
•
Expires: 1977-06-21
Abstract
No abstract record available.
Inventors
- 👤 O'connor Chadwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:07
CPC Classifications
F; F16; F16M; F16M11/00; F16M11/20; F16M11/2007; F16M11/2014; F16M11/02; F16M11/04; F16M11/06; F16M11/10; F16M2200/00; F16M2200/02; F16M2200/021; F16M2200/022; F16M2200/04; F16M2200/041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2743792A
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US2655476A
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US2771422A
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US2882001A
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US2905421A
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US2792095A
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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) | 1964-09-04 | 1965-03-06 | 1965-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-04 | 1969-03-06 | 1969-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-04 | 1973-03-06 | 1973-09-05 | $7700.00 | Window Closed / Lapsed |