Patent US3280974A successfully refreshed from Google Patents.
US3280974A
Expired / Lapsed
US
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Method and apparatus for recognizing printed currency
Assignee: Individual
•
Filing: 1961-08-23
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Granted: 1966-10-25
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Expires: 1981-08-23
Abstract
No abstract record available.
Inventors
- 👤 John B Riddle
- 👤 Arndt B Bergh
- 👤 Charles O Forge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:29
CPC Classifications
G; G07; G07D; G07D7/00; G07D7/04; G07D7/20; G07D7/202; G07D7/206
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
THE METHOD OF RECOGNIZING A PREDETERMINED VALID PIECE OF PRINTED UNITED STATES MONEY WHICH COMPRISES: SELECTING A PLURALITY OF PRINTED AREA OF SAID PIECE OF MONEY INCLUDING A FIRST PRINTED AREA CONTAINING MAGNETIZABLE INK AND A SECOND PRINTED AREA CONTAINING NONMAGNETIZABLE INK, DETECTING THE MAGNETIZABLE INK ON A PIECE OF PRINTED MATTER IN AREAS CORRESPONDING TO SAID FIRST AND SECOND SELECTED AREAS, REJECTING SAID PIECE OF PRINTED MATTER WHEN NO MAGNETIZABLE INK IS DETECTED IN SAID FIRST AREA, AND REJECTING SAID PIECE OF PRINTED MATTER WHEN MAGNETIZABLE INK IS DETECTED IN SAID SECOND AREA.
Claim 2
Independent Claim
94 words
THE METHOD OF RECOGNIZING A PREDETERMINED VALID PIECE OF PRINTED UNITED STATES MONEY WHICH COMPRISES: SELECTING A PLURALITY OF PRINTED AREA OF SAID PIECE OF MONEY INCLUDING A FIRST PRINTED AREA CONTAINING MAGNETIZABLE INK AND A SECOND PRINTED AREA CONTAINING NONMAGNETIZABLE INK, DETECTING THE MAGNETIZABLE INK ON A PIECE OF PRINTED MATTER IN AREAS CORRESPONDING TO SAID FIRST AND SECOND SELECTED AREAS, REJECTING SAID PIECE OF PRINTED MATTER WHEN NO MAGNETIZABLE INK IS DETECTED IN SAID FIRST AREA, AND REJECTING SAID PIECE OF PRINTED MATTER WHEN MAGNETIZABLE INK IS DETECTED IN SAID SECOND AREA.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |