Patent US3121843A successfully refreshed from Google Patents.
US3121843A
Expired / Lapsed
US
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Diode bridge phase detector
Assignee: Individual
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Filing: 1961-01-31
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Granted: 1964-02-18
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Expires: 1981-01-31
Abstract
No abstract record available.
Inventors
- 👤 Louis A Ule
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:54
CPC Classifications
H; H03; H03D; H03D13/00; H03D13/007; H03D13/009
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
140 words
APPARATUS FOR DETERMINING THE PHASE DIFFERENCE BETWEEN A PAIR OF ALTERNATING CURRENT SIGNALS INCLUDING A FOURARMED BRIDGE CIRCUIT HAVING A PAIR OF DIODES CONNECTED IN SERIES IN EACH OF SAID ARMS, THE CATHODE OF THE FIRST DIODE BEING CONNECTED TO THE ANODE OF THE SECOND DIODE OF EACH PAIR, SAID DIODES IN TWO OF SAID ARMS BEING POLED TO CONDUCT CURRENT TOWARD A FIRST CORNER FORMED BY THE JUNCTION OF SAID TWO ARMS, SAID DIODES IN THE OTHER TWO OF SAID ARMS BEING POLED TO CONDUCT CURRENT TOWARD A SECOND CORNER FORMED BY THE JUNCTION OF SAID OTHER TWO OF SAID ARMS, SAID SECOND CORNER BEING DIAGONALLY OPPOSITE SAID FIRST CORNER AND CONNECTED TO SAID FIRST CORNER BY A FIRST DIAGONAL, A SECOND DIAGONAL CONNECTED ACROSS A SECOND PAIR OF DIAGONALLY OPPOSITE CORNERS OF SAID BRIDGE, SAID FIRST AND SEC-
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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) | 1967-02-17 | 1967-08-19 | 1968-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-17 | 1971-08-19 | 1972-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-17 | 1975-08-19 | 1976-02-18 | $7700.00 | Window Closed / Lapsed |