Patent US3305727A successfully refreshed from Google Patents.
US3305727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parametron circuit utilizing thin film element
Assignee: Toko Radio Coil Kenkyusho KK
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Filing: 1964-05-27
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Granted: 1967-02-21
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Expires: 1984-05-27
Abstract
No abstract record available.
Inventors
- 👤 Matsushita Akira
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:36
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/45; H03K3/47
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A PARAMETRON COMPRISING A BALANCED BRIDGE INCLUDING ARMS COMPOSED OF A WIRE HAVING A COATING OF A MAGNETIC MATERIAL, A TUNING CAPACITOR CONNECTED ACROSS BALANCED POINTS OF SAID BRIDGE, SAID BRIDGE BEING FOLDED ALONG A LINE PASSING THROUGH SAID BALANCED TERMINALS TO SUPERPOSE THE ARMS OF SAID BRIDGE SO THAT EXCITATION CURRENT FLOWS THERETHROUGH IN OPPOSITE DIRECTIONS, AND INPUT AND OUTPUT COUPLING COILS DISPOSED ADJACENT AND CLOSE TO SAID SUPERPOSED BRIDGE ARMS.
Claim 2
Dependent Claim
72 words
A PARAMETRON COMPRISING A BALANCED BRIDGE INCLUDING ARMS COMPOSED OF A WIRE HAVING A COATING OF A MAGNETIC MATERIAL, A TUNING CAPACITOR CONNECTED ACROSS BALANCED POINTS OF SAID BRIDGE, SAID BRIDGE BEING FOLDED ALONG A LINE PASSING THROUGH SAID BALANCED TERMINALS TO SUPERPOSE THE ARMS OF SAID BRIDGE SO THAT EXCITATION CURRENT FLOWS THERETHROUGH IN OPPOSITE DIRECTIONS, AND INPUT AND OUTPUT COUPLING COILS DISPOSED ADJACENT AND CLOSE TO SAID SUPERPOSED BRIDGE ARMS.
References Cited (Backward Citations)
FR1363569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |