US3021136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet feeding mechanism
Assignee: Bell and Howell Co
•
Filing: 1957-12-02
•
Granted: 1962-02-13
•
Expires: 1977-12-02
Abstract
No abstract record available.
Inventors
- 👤 Merrill J Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:26
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/46; B65H3/52; B65H3/5246; B65H3/5253; B65H3/5261; G; G06; G06K; G06K13/00; G06K13/02; G06K13/08; G06K13/10; G06K13/103
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2224137A
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US2224138A
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US2652248A
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US2626148A
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US2655374A
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US2670954A
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US2665906A
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US2762623A
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US2750188A
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US2836416A
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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) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |