US3463906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical card reader
Assignee: HP Inc
•
Filing: 1965-04-06
•
Granted: 1969-08-26
•
Expires: 1985-04-06
Abstract
No abstract record available.
Inventors
- 👤 Franklin C Chiang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:07
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/01; G06K7/10; G06K7/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2288770A
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US2658751A
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US2817480A
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US2848535A
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US2921736A
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US2983446A
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US3076599A
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US3229073A
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US3219246A
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US3207845A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-25 | 1973-02-24 | 1973-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-25 | 1977-02-24 | 1977-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-25 | 1981-02-24 | 1981-08-26 | $7700.00 | Window Closed / Lapsed |