Patent US3134254A successfully refreshed from Google Patents.
US3134254A
Expired / Lapsed
US
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Secure locking system
Assignee: Individual
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Filing: 1961-01-24
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Granted: 1964-05-26
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Expires: 1981-01-24
Abstract
No abstract record available.
Inventors
- 👤 Joseph D Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:18
CPC Classifications
G; G07; G07C; G07C9/00; G07C9/00174; G07C9/00658; G07C9/00714; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/1014; Y10T292/1021; Y10T70/00; Y10T70/70; Y10T70/7051; Y10T70/7062
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
IN A LOCKING CIRCUIT INCLUDING LOCKING APPARATUS AND A REMOVABLE KEY ASSEMBLY EMBODYING AT LEAST ONE COMPLETE ELECTRONIC CIRCUIT COMPONENT OF A SPECIFIC VALUE, LOCKING APPARATUS WHICH COMPRISES: AN OPEN ELECTRONIC OSCILLATOR CIRCUIT, THE RESULTING FREQUENCY OF WHICH MAY BE DETERMINED BY THE AFOREMENTIONED SPECIFIC VALUED CIRCUIT COMPONENT OF THE KEY ASSEMBLY WHEN CONNECTED THEREIN TO CLOSE SAID OSCILLATOR CIRCUIT; CONTACT MEANS REMOVABLY ENGAGEABLE BY THE KEY ASSEMBLY FOR ELECTROCONDUCTIVELY CONNECTING THE SAID ELECTRONIC COMPONENT OF THE KEY ASSEMBLY INTO SAID OSCILLATOR CIRCUIT, A SPECIFIC OSCILLATOR FREQUENCY THEREBY RESULTING; FREQUENCY DISCRIMINATING MEANS RESPONSIVE ONLY TO SIGNALS OF SAID SPECIFIC RE-
Claim 2
Dependent Claim
100 words
IN A LOCKING CIRCUIT INCLUDING LOCKING APPARATUS AND A REMOVABLE KEY ASSEMBLY EMBODYING AT LEAST ONE COMPLETE ELECTRONIC CIRCUIT COMPONENT OF A SPECIFIC VALUE, LOCKING APPARATUS WHICH COMPRISES: AN OPEN ELECTRONIC OSCILLATOR CIRCUIT, THE RESULTING FREQUENCY OF WHICH MAY BE DETERMINED BY THE AFOREMENTIONED SPECIFIC VALUED CIRCUIT COMPONENT OF THE KEY ASSEMBLY WHEN CONNECTED THEREIN TO CLOSE SAID OSCILLATOR CIRCUIT; CONTACT MEANS REMOVABLY ENGAGEABLE BY THE KEY ASSEMBLY FOR ELECTROCONDUCTIVELY CONNECTING THE SAID ELECTRONIC COMPONENT OF THE KEY ASSEMBLY INTO SAID OSCILLATOR CIRCUIT, A SPECIFIC OSCILLATOR FREQUENCY THEREBY RESULTING; FREQUENCY DISCRIMINATING MEANS RESPONSIVE ONLY TO SIGNALS OF SAID SPECIFIC RE-
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) | 1967-05-26 | 1967-11-25 | 1968-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-26 | 1971-11-25 | 1972-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-26 | 1975-11-25 | 1976-05-26 | $7700.00 | Window Closed / Lapsed |