US3247494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Memory control systems
Assignee: GTE Sylvania Inc
•
Filing: 1960-10-14
•
Granted: 1966-04-19
•
Expires: 1980-10-14
Abstract
No abstract record available.
Inventors
- 👤 Albert H Ashley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:48
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/02; G11C11/06; G11C11/06007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
AN ELECTRONIC CIRCUIT COMPRISING: A PLURALITY OF MAGNETIC ELEMENTS; A CONDUCTOR CONNECTED TO SAID ELEMENTS; AT LEAST ONE TRANSISTOR CONNECTED TO SAID CONDUCTOR; A SOURCE OF SWITCHING CURRENT; A SOURCE OF CONTROL SIGNALS; MEANS FOR CONNECTING SAID CURRENT SOURCE TO SAID TRANSISTOR; MEANS FOR CONNECTING SAID SIGNAL SOURCE TO SAID TRANSISTOR; AND, A CIRCUIT CONTROL SUBSYSTEM CONNECTED TO SAID CURRENT SOURCE AND SAID SIGNAL SOURCE ARRANGED TO PERMIT SAID SWITCHING CURRENT SOURCE TO BE CONNECTED TO SAID TRANSSISTOR ONLY AFTER SAID SIGNAL SOURCE HAS FIRST BEEN SO CONNECTED AND TO PREVENT SAID SIGNAL SOURCE FROM BEING DISCONNECTED FROM SAID TRANSISTOR UNTIL AFTER SAID CURRENT SOURCE HAS FIRST BEEN DISCONNECTED.
Claim 2
Dependent Claim
109 words
AN ELECTRONIC CIRCUIT COMPRISING: A PLURALITY OF MAGNETIC ELEMENTS; A CONDUCTOR CONNECTED TO SAID ELEMENTS; AT LEAST ONE TRANSISTOR CONNECTED TO SAID CONDUCTOR; A SOURCE OF SWITCHING CURRENT; A SOURCE OF CONTROL SIGNALS; MEANS FOR CONNECTING SAID CURRENT SOURCE TO SAID TRANSISTOR; MEANS FOR CONNECTING SAID SIGNAL SOURCE TO SAID TRANSISTOR; AND, A CIRCUIT CONTROL SUBSYSTEM CONNECTED TO SAID CURRENT SOURCE AND SAID SIGNAL SOURCE ARRANGED TO PERMIT SAID SWITCHING CURRENT SOURCE TO BE CONNECTED TO SAID TRANSSISTOR ONLY AFTER SAID SIGNAL SOURCE HAS FIRST BEEN SO CONNECTED AND TO PREVENT SAID SIGNAL SOURCE FROM BEING DISCONNECTED FROM SAID TRANSISTOR UNTIL AFTER SAID CURRENT SOURCE HAS FIRST BEEN DISCONNECTED.
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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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |