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US2982100A
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Assignee: WILLIAM S THOMPSON
•
Filing: 1958-10-17
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Granted: 1961-05-02
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Expires: 1978-10-17
Abstract
No abstract record available.
Inventors
- 👤 Alfred C Sinclair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:14
CPC Classifications
F; F04; F04B; F04B47/00; F04B47/02; F04B47/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1460586A
Cited
US1826363A
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US2016654A
Cited
US2141703A
Cited
US2355669A
Cited
US2402300A
Cited
US2555427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-01 | 1964-10-31 | 1965-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-01 | 1968-10-31 | 1969-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-01 | 1972-10-31 | 1973-05-02 | $7700.00 | Window Closed / Lapsed |