US3231837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
All-pass transformer coupling network utilizing high frequency and low frequency transformers in parallel connection
Assignee: Raytheon Co
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Filing: 1961-06-20
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Granted: 1966-01-25
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Expires: 1981-06-20
Abstract
No abstract record available.
Inventors
- 👤 Thomas R O'meara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:19
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/38; H01; H01F; H01F19/00; H01F19/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A NETWORK FOR MATCHING IMPEDANCES BETWEEN FIRST AND SECOND TERMINALS COMPRISING A FIRST TRANSFORMER COUPLED BETWEEN SAID FIRST AND SECOND TERMINALS AND HAVING A PASSBAND STARTING AT A RELATIVELY LOW FREQUENCY AND EXTENDING TO A TRANSISTING FREQUENCY, A SECOND TRANSFORMER COUPLED BETWEEN SAID FIRST AND SECOND TERMINALS IN PARALLEL WITH SAID FIRST TRANSFORMER AND HAVING A PASSBAND STARTING AT SAID TRANSITION FREQUENCY AND EXTENDING TO A RELATIVELY HIGH FREQUENCY, FIRST AND SECOND ISOLATING MEANS
Claim 2
Dependent Claim
74 words
A NETWORK FOR MATCHING IMPEDANCES BETWEEN FIRST AND SECOND TERMINALS COMPRISING A FIRST TRANSFORMER COUPLED BETWEEN SAID FIRST AND SECOND TERMINALS AND HAVING A PASSBAND STARTING AT A RELATIVELY LOW FREQUENCY AND EXTENDING TO A TRANSISTING FREQUENCY, A SECOND TRANSFORMER COUPLED BETWEEN SAID FIRST AND SECOND TERMINALS IN PARALLEL WITH SAID FIRST TRANSFORMER AND HAVING A PASSBAND STARTING AT SAID TRANSITION FREQUENCY AND EXTENDING TO A RELATIVELY HIGH FREQUENCY, FIRST AND SECOND ISOLATING MEANS
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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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |