Patent US2587325A successfully refreshed from Google Patents.
US2587325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
husted
Assignee: —
•
Filing: —
•
Granted: 1952-02-26
•
Expires: 1969-02-26
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:53
CPC Classifications
G; G09; G09F; G09F7/00; G09F7/16; G09F13/00; G09F13/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1227074A
Cited
US1719540A
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US2043690A
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FR731350A
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FR736970A
Cited
US1898379A
Cited
US1947549A
Cited
US2018208A
Cited
US2130256A
Cited
US2354049A
Cited
US2487644A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |