US3275840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Current drive circuit
Assignee: AT&T Inc
•
Filing: 1962-12-03
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Granted: 1966-09-27
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Expires: 1982-12-03
Abstract
No abstract record available.
Inventors
- 👤 Philip A Harding
- 👤 Jr Eugene H Siegel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:04
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A CURRENT DRIVER CIRCUIT COMPRISING A SOURCE OF PULSES, A PLURALITY N OF PULSE AMPLIFIERS EACH HAVING AN OUTPUT PULSE AMPLITUDE PROBABILITY OF VARIANCE OF V, MEANS CONNECTING THE INPUTS OF SAID AMPLIFIERS TO SAID SOURCE, AND MEANS COUPLING THE OUTPUTS OF SAID AMPLIFIERS IN SERIES TO PRODUCE AN OUTPUT PULSE AMPLITUDE PROBABILITY OF VARIANCE OF V/N.
Claim 2
Dependent Claim
57 words
A CURRENT DRIVER CIRCUIT COMPRISING A SOURCE OF PULSES, A PLURALITY N OF PULSE AMPLIFIERS EACH HAVING AN OUTPUT PULSE AMPLITUDE PROBABILITY OF VARIANCE OF V, MEANS CONNECTING THE INPUTS OF SAID AMPLIFIERS TO SAID SOURCE, AND MEANS COUPLING THE OUTPUTS OF SAID AMPLIFIERS IN SERIES TO PRODUCE AN OUTPUT PULSE AMPLITUDE PROBABILITY OF VARIANCE OF V/N.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |