Patent US2690222A successfully refreshed from Google Patents.
US2690222A
Expired / Lapsed
US
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Mark sensing reproducer
Assignee: International Business Machines Corp
•
Filing: 1950-08-19
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Granted: 1954-09-28
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Expires: 1970-08-19
Abstract
No abstract record available.
Inventors
- 👤 Lawrence A Wilson
- 👤 Jonas E Dayger
- 👤 Paul V Babel
- 👤 Leslie A Stanton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:47
CPC Classifications
G; G06; G06K; G06K19/00; G06K19/04; B; B65; B65H; B65H75/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1962732A
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USRE21133E
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US2171556A
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US2007391A
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US2107008A
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US2254931A
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US2353061A
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US2275396A
Cited
US2416625A
Cited
US2448760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-27 | 1958-03-29 | 1958-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-27 | 1962-03-29 | 1962-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-27 | 1966-03-29 | 1966-09-28 | $7700.00 | Window Closed / Lapsed |