Patent US2597003A successfully refreshed from Google Patents.
US2597003A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1948-02-04
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Granted: 1952-05-20
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Expires: 1968-02-04
Abstract
No abstract record available.
Inventors
- 👤 Johnson Andrew Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:24
CPC Classifications
G; G09; G09F; G09F7/00; G09F7/02; G09F7/08; G09F7/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US480255A
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US930488A
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US1904738A
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US2175305A
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US2282606A
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US2163695A
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US2198184A
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US2231795A
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US2411222A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-20 | 1955-11-19 | 1956-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-20 | 1959-11-19 | 1960-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-20 | 1963-11-19 | 1964-05-20 | $7700.00 | Window Closed / Lapsed |