US3376489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulated power supply
Assignee: Caterpillar Inc
•
Filing: 1966-02-21
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Granted: 1968-04-02
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Expires: 1986-02-21
Abstract
No abstract record available.
Inventors
- 👤 John W Crayton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:51
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/33507; H02M3/33523
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
73 words
A CLOSED LOOP CONSTANT CURRENT DEVICE HAVING TWO INPUT TERMINALS AND ONE OUTPUT TERMINAL AND COMPRISING IN COMBINATION: A D.C. VOLTAGE SOURCE CONNECTED ACROSS THE TWO INPUT TERMINALS; A FIRST TRANSISTOR HAVING A BASE, A COLLECTOR AND AN EMITTER; A SECOND TRANSISTOR COMPLEMENTARY TO SAID FIRST TRANSISTOR AND HAVING A BASE, A COLLECTOR AND AN EMITTER; AND A RESISTOR; AND WHEREIN THE FIRST INPUT TERMINAL CONNECTS TO THE BASE OF SAID FIRST TRAN-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |