US2652248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic sheet separating and feeding mechanism
Assignee: Bell and Howell Co
•
Filing: 1948-10-09
•
Granted: 1953-09-15
•
Expires: 1968-10-09
Abstract
No abstract record available.
Inventors
- 👤 Elmer L Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:47
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/62; G03B27/6207; G03B27/625; G03B27/6264; B; B65; B65H; B65H3/00; B65H3/02; B65H3/06; B65H3/0661
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1879966A
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US718735A
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US876914A
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US1912941A
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US1982823A
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US2080968A
Cited
US2138306A
Cited
US2204715A
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US2351854A
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US2550032A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-14 | 1957-03-16 | 1957-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-14 | 1961-03-16 | 1961-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-14 | 1965-03-16 | 1965-09-15 | $7700.00 | Window Closed / Lapsed |