US2973139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: LOUIS LAWRENCE EPSTEIN
•
Filing: 1959-01-05
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Granted: 1961-02-28
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Expires: 1979-01-05
Abstract
No abstract record available.
Inventors
- 👤 Adolph A Leone
- 👤 Joseph T Polese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:04
CPC Classifications
G; G07; G07F; G07F9/00; G07F9/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-28 | 1964-08-29 | 1965-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-28 | 1968-08-29 | 1969-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-28 | 1972-08-29 | 1973-02-28 | $7700.00 | Window Closed / Lapsed |