Patent US2656889A successfully refreshed from Google Patents.
US2656889A
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US
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Automatcally operated cutting wheel for opening envelopes
Assignee: IND MOLDED PRODUCTS CO Inc
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Filing: 1949-10-07
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Granted: 1953-10-27
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Expires: 1969-10-07
Abstract
No abstract record available.
Inventors
- 👤 Benjamin B Kaplan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:16
CPC Classifications
B; B43; B43M; B43M7/00; B43M7/005; Y; Y10; Y10S; Y10S30/00; Y10S30/03; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19047; Y10T83/00; Y10T83/525; Y10T83/541; Y10T83/544; Y10T83/768; Y10T83/7793; Y10T83/7797
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1825223A
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US1949281A
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US2106191A
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US2253311A
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US2186594A
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US2317553A
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US2506343A
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US2519201A
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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) | 1956-10-26 | 1957-04-27 | 1957-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-26 | 1961-04-27 | 1961-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-26 | 1965-04-27 | 1965-10-27 | $7700.00 | Window Closed / Lapsed |