US3271699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balanced modulator having the anode of a multiplier phototube directly connected to the cathode of the modulator tube
Assignee: Northrop Grumman Guidance and Electronics Co Inc
•
Filing: 1963-07-19
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Granted: 1966-09-06
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Expires: 1983-07-19
Abstract
No abstract record available.
Inventors
- 👤 Peter R Marzan
- 👤 John R Shonnard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:33
CPC Classifications
H; H03; H03C; H03C1/00; H03C1/52; H03C1/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A BALANCED MODULATOR COMPRISING A TWIN PENTODE TUBE PROVIDED WITH A CATHODE, A PAIR OF CONTROL GRIDS AND A PAIR OF ANODES, A SIGNAL INPUT CIRCUIT CONNECTED TO SAID CATHODE, A SOURCE OF STEADY CARRIER CURRENT CONNECTED TO SAID PAIR OF CONTROL GRIDS, AN OUTPUT CIRCUIT CONNECTED TO SAID PAIR OF ANODES, A MULTIPLIER PHOTOTUBE HAVING AN ANODE FOR GENERATING A SIGNAL IN SAID SIGNAL INPUT CIRCUIT, AND A DIRECT-CURRENT SOURCE FOR ENERGIZING SAID TWIN PENTODE TUBE AND SAID PHOTOTUBE, SAID TWIN PENTODE TUBE, SIGNAL INPUT CIRCUIT AND PHOTOTUBE BEING CONNECTED IN SERIES RELATION ACROSS THE TERMINALS OF SAID DIRECTCURRENT SOURCE, THE ANODE OF THE PHOTOTUBE BEING CONNECTED TO SAID INPUT CIRCUIT.
Claim 2
Dependent Claim
112 words
A BALANCED MODULATOR COMPRISING A TWIN PENTODE TUBE PROVIDED WITH A CATHODE, A PAIR OF CONTROL GRIDS AND A PAIR OF ANODES, A SIGNAL INPUT CIRCUIT CONNECTED TO SAID CATHODE, A SOURCE OF STEADY CARRIER CURRENT CONNECTED TO SAID PAIR OF CONTROL GRIDS, AN OUTPUT CIRCUIT CONNECTED TO SAID PAIR OF ANODES, A MULTIPLIER PHOTOTUBE HAVING AN ANODE FOR GENERATING A SIGNAL IN SAID SIGNAL INPUT CIRCUIT, AND A DIRECT-CURRENT SOURCE FOR ENERGIZING SAID TWIN PENTODE TUBE AND SAID PHOTOTUBE, SAID TWIN PENTODE TUBE, SIGNAL INPUT CIRCUIT AND PHOTOTUBE BEING CONNECTED IN SERIES RELATION ACROSS THE TERMINALS OF SAID DIRECTCURRENT SOURCE, THE ANODE OF THE PHOTOTUBE BEING CONNECTED TO SAID INPUT CIRCUIT.
References Cited (Backward Citations)
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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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |