US2794153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: GREYDAN Manufacturing Co
•
Filing: 1953-02-24
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Granted: 1957-05-28
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Expires: 1973-02-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Floyd F Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:23
CPC Classifications
G; G09; G09F; G09F13/00; G09F13/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2181889A
Cited
US2121460A
Cited
US2184530A
Cited
US2142633A
Cited
US2488169A
Cited
US2731585A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |