US3312967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alternating current electrical load monitoring device
Assignee: Individual
•
Filing: 1964-05-12
•
Granted: 1967-04-04
•
Expires: 1984-05-12
Abstract
No abstract record available.
Inventors
- 👤 Levine George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:45
CPC Classifications
G; G09; G09F; G09F9/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
92 words
AN ELECTRIC NETWORK COMPRISING A CURRENT CONSUMING LOADS, A SOURCE OF ALTERNATING CURRENT, A NORMALLY OPEN MAGNETICALLY RESPONSIVE SWITCH, A BIASING COIL MAGNETICALLY COUPLED TO SAID SWITCH AND CONNECTED TO SAID SOURCE OF ALTERNATING CURRENT TO PRODUCE A MAGNETIC FIELD SUFFICIENT TO BIAS SAID SWITCH TO A CLOSED POSITION, AND A CONTROL COIL MAGNETICALLY COUPLED TO SAID SWITCH AND CONNECTED IN OPPOSITE PHASE TO SAID ALTERNATING CURRENT SOURCE THROUGH SAID LOAD AND NORMALLY PRODUCING A MAGNETIC FIELD SUFFICIENT TO BUCK SAID BIASING COIL MAGNET FIELD AND EFFECT THE OPENING OF SAID SWITCH.
References Cited (Backward Citations)
US1574513A
Cited
DE735401C
Cited
US2588314A
Cited
US3031655A
Cited
US3182226A
Cited
US3124670A
Cited
US3256425A
Cited
US3242411A
Cited
US3210614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-03 | 1970-10-03 | 1971-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-03 | 1974-10-03 | 1975-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-03 | 1978-10-03 | 1979-04-04 | $7700.00 | Window Closed / Lapsed |