Patent US2532397A successfully refreshed from Google Patents.
US2532397A
Expired / Lapsed
US
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Band groove serrating machine
Assignee: ACF Industries Inc
•
Filing: 1944-05-10
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Granted: 1950-12-05
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Expires: 1964-05-10
Abstract
No abstract record available.
Inventors
- 👤 Morris S Evans
- 👤 Abraham O Kleckner
- 👤 Edmund A Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:57
CPC Classifications
B; B21; B21K; B21K25/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US123822A
Cited
US435573A
Cited
US551066A
Cited
US1843675A
Cited
GB191317388A
Cited
US1233343A
Cited
US1428219A
Cited
GB368287A
Cited
US1913591A
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US2203956A
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US2225426A
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US2318445A
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US2291803A
Cited
US2291382A
Cited
US2319677A
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US2386296A
Cited
US2386432A
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US2390420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |