Patent US2580974A successfully refreshed from Google Patents.
US2580974A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1945-07-16
•
Granted: 1952-01-01
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Expires: 1965-07-16
Abstract
No abstract record available.
Inventors
- 👤 Roser B Sutter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:21
CPC Classifications
A; A24; A24F; A24F5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US348839A
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US578881A
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US582423A
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US1033482A
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US1254478A
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US1272389A
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US1276751A
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US1564500A
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US1641956A
Cited
FR764543A
Cited
US2308758A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |