Patent US2990957A successfully refreshed from Google Patents.
US2990957A
Expired / Lapsed
US
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Record card sorting collator
Assignee: International Business Machines Corp
•
Filing: 1955-12-20
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Granted: 1961-07-04
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Expires: 1975-12-20
Abstract
No abstract record available.
Inventors
- 👤 Joseph M Sarley
- 👤 John R Natvig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:03
CPC Classifications
G; G06; G06K; G06K13/00; G06K13/02; G06K13/08; G06K13/14; B; B65; B65H; B65H2701/00; B65H2701/10; B65H2701/19; B65H2701/1914
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2661841A
Cited
US2434512A
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US2610736A
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US2602544A
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US2681145A
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US2597647A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |