US2996012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotating band and seat therefor
Assignee: Individual
•
Filing: 1955-11-17
•
Granted: 1961-08-15
•
Expires: 1975-11-17
Abstract
No abstract record available.
Inventors
- 👤 Rex B Butler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:31
CPC Classifications
F; F42; F42B; F42B14/00; F42B14/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US293337A
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US469631A
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US707135A
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US681448A
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US815992A
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US789359A
Cited
US805556A
Cited
GB586674A
Cited
US2442369A
Cited
US2663259A
Cited
US2809587A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |