US2639613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring and weight testing device
Assignee: ACCURATE PARTS MANUFACTURING Co
•
Filing: 1947-01-10
•
Granted: 1953-05-26
•
Expires: 1967-01-10
Abstract
No abstract record available.
Inventors
- 👤 Richmond Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:19
CPC Classifications
G; G01; G01N; G01N3/00; G01N2203/00; G01N2203/02; G01N2203/026; G01N2203/0288; G01N2203/0292
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US873034A
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US1204483A
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US1165934A
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US1222315A
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US1259680A
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US1822587A
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CH131145A
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US1817315A
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US1874780A
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FR766324A
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US2125483A
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US2353155A
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US2265043A
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US2359236A
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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) | 1956-05-25 | 1956-11-24 | 1957-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-25 | 1960-11-24 | 1961-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-25 | 1964-11-24 | 1965-05-26 | $7700.00 | Window Closed / Lapsed |