US3304443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delay circuit
Assignee: Honeywell Inc
•
Filing: 1965-02-12
•
Granted: 1967-02-14
•
Expires: 1985-02-12
Abstract
No abstract record available.
Inventors
- 👤 James E Sheahan
- 👤 Jr Edwin H Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:29
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/26; H03K3/28; H03K3/281; H03K3/284
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
117 words
IN A TRANSISTOR DELAY CIRCUIT COMPRISING A FIRST TRANSISTOR HAVING BASE, COLLECTOR AND EMITTER ELECTRODES, AND A SECOND TRANSISTOR HAVING BASE, COLLECTOR AND EMITTER ELECTRODES, CONNECTED IN A FACE-TO-FACE ARRANGEMENT WITH THE COLLECTOR ELECTRODES OF THE TWO TRANSISTORS CONNECTED TO A FIRST POINT AND THE EMITTER ELECTRODES OF THE TWO TRANSISTORS CONNECTED TO A SECOND POINT, A THIRD TRANSISTOR CONNECTED BY A RESISTOR-CAPACITOR TIME CONSTANT NETWORK TO SAID FIRST POINT, A FEEDBACK CIRCUIT BETWEEN SAID THIRD TRANSISTOR AND SAID BASE ELECTRODE OF SAID SECOND TRANSISTOR, MEANS TO CONNECT AN EXTERNAL SIGNAL TO SAID BASE OF SAID FIRST TRANSISTOR, AND MEANS TO CONNECT A VOLTAGE SOURCE ACROSS SAID FIRST POINT AND SAID SECOND POINT, THE COMBINATION IN SAID
References Cited (Backward Citations)
US3153781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |