US2524029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic sensing device for reading perforated records repetitively
Assignee: International Business Machines Corp
•
Filing: 1946-07-27
•
Granted: 1950-10-03
•
Expires: 1966-07-27
Abstract
No abstract record available.
Inventors
- 👤 Fred M Carroll
- 👤 Oscar L Hibbard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:16
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US526129A
Cited
US1156957A
Cited
US1361791A
Cited
US1826992A
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US1818473A
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US2059797A
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US1859435A
Cited
US2093529A
Cited
US2063486A
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US2027033A
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US2240667A
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US2175608A
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US2310445A
Cited
US2131919A
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US2324438A
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US2307617A
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US2415279A
Cited
US2364556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-02 | 1954-04-03 | 1954-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-02 | 1958-04-03 | 1958-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-02 | 1962-04-03 | 1962-10-03 | $7700.00 | Window Closed / Lapsed |