Patent US1723228A successfully refreshed from Google Patents.
US3469103A
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Photoelectric punched paper tape reader rejecting diffused light rays
Assignee: Navigation Computer Corp
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Filing: 1966-01-18
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Granted: 1969-09-23
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Expires: 1986-01-18
Abstract
No abstract record available.
Inventors
- 👤 Adolph C Erpel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:49
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10821; G06K7/10831; G01; G01N; G01N21/00; G01N21/84; G01N21/88; G01N21/89; G01N21/8901; G01N2201/00; G01N2201/08; G01N2201/0813
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2242317A
Cited
US2617048A
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US3011387A
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US3031351A
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US2916624A
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US3183361A
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US3248554A
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US3240109A
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US3297879A
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US3365568A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |