Patent US3373856A successfully refreshed from Google Patents.
US3373856A
Expired / Lapsed
US
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Method and apparatus for coin selection
Assignee: Canadian Patents and Development Ltd
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Filing: 1966-05-23
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Granted: 1968-03-19
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Expires: 1986-05-23
Abstract
No abstract record available.
Inventors
- 👤 Norbert L Kusters
- 👤 Malcolm P Macmartin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:22
CPC Classifications
G; G07; G07D; G07D5/00; G07D5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A METHOD OF TESTING COINS COMPRISING PASSING AN ALTERNATING MAGNETIC FIELD THROUGH THE COIN TO BE TESTED, MEASURING THE VARIATION IN THE FIELD STRENGTH DUE TO THE COIN, AND APPLYING THE MEASUREMENT SO OBTAINED TO DISCRIMINATION MEANS SUCH THAT COINS CAUSING A VARIATION IN FIELD STRENGTH THAT LIE WITHIN A PRE-DETERMINED RANGE ARE FOUND TO BE ACCEPTABLE AND ALL OTHERS REJECTED.
Claim 2
Independent Claim
61 words
A METHOD OF TESTING COINS COMPRISING PASSING AN ALTERNATING MAGNETIC FIELD THROUGH THE COIN TO BE TESTED, MEASURING THE VARIATION IN THE FIELD STRENGTH DUE TO THE COIN, AND APPLYING THE MEASUREMENT SO OBTAINED TO DISCRIMINATION MEANS SUCH THAT COINS CAUSING A VARIATION IN FIELD STRENGTH THAT LIE WITHIN A PRE-DETERMINED RANGE ARE FOUND TO BE ACCEPTABLE AND ALL OTHERS REJECTED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |