Patent US2815074A successfully refreshed from Google Patents.
US2815074A
Expired / Lapsed
US
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Sheet cutting apparatus
Assignee: Cleveland Crane and Engineering Co
•
Filing: 1954-03-01
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Granted: 1957-12-03
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Expires: 1974-03-01
Abstract
No abstract record available.
Inventors
- 👤 Roy F Dehn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:41
CPC Classifications
B; B21; B21D; B21D43/00; B21D43/28; B21D43/287; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/0505; Y10T83/051; Y10T83/202; Y10T83/2092; Y10T83/2196; Y10T83/444; Y10T83/4564; Y10T83/4567; Y10T83/4569; Y10T83/461; Y10T83/647; Y10T83/6572
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1665209A
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US2025418A
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GB458228A
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US2196684A
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US2219049A
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US2316971A
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US2623590A
Cited
US2663784A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-02 | 1961-06-03 | 1961-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-02 | 1965-06-03 | 1965-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-02 | 1969-06-03 | 1969-12-03 | $7700.00 | Window Closed / Lapsed |