US2672835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet feeding mechanism
Assignee: Radio Steel & Manufacturing Co
•
Filing: 1951-01-09
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Granted: 1954-03-23
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Expires: 1971-01-09
Abstract
No abstract record available.
Inventors
- 👤 Paul Alex
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:42
CPC Classifications
B; B21; B21D; B21D43/00; B21D43/02; B21D43/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1917359A
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US2128316A
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US2268298A
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US2317440A
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US2410694A
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US2444544A
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US2542303A
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US2572472A
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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) | 1957-03-22 | 1957-09-21 | 1958-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-22 | 1961-09-21 | 1962-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-22 | 1965-09-21 | 1966-03-23 | $7700.00 | Window Closed / Lapsed |