Patent US3272997A successfully refreshed from Google Patents.
US3272997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
On-off signal generators
Assignee: Hitachi Ltd
•
Filing: 1964-12-16
•
Granted: 1966-09-13
•
Expires: 1984-12-16
Abstract
No abstract record available.
Inventors
- 👤 Kimura Naokazu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:38
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/26; H03K3/28; H03K3/281; H03K3/286; H03K3/2893
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A DEVICE FOR DETECTING THE AMPLITUDE OF A SIGNAL APPLIED THERETO AS COMPARED TO A REFERENCE QUANTITY REPRESENTED BY A REFERENCE VOLTAGE COMPRSING: BISTABLE CIRCUIT MEANS INCLUDING A PAIR OF CROSS COUPLED PARALLEL CONNECTED AMPLIFIERS CAPABLE OF SELECTIVELY PROVIDING RESPECTIVE STABLE STATES OF AMPLIFICATION AND BISTABLE OPERATION IN DEPENDENCE UPON THE POWER SUPPLY VOLTAGE APPLIED THERETO, ALTERNATING CURRENT VOLTAGE SUPPLY MEANS PROVIDING SAID POWER SUPPLY VOLTAGE CONNECTED IN PARALLEL WITH THE
Claim 2
Independent Claim
71 words
A DEVICE FOR DETECTING THE AMPLITUDE OF A SIGNAL APPLIED THERETO AS COMPARED TO A REFERENCE QUANTITY REPRESENTED BY A REFERENCE VOLTAGE COMPRSING: BISTABLE CIRCUIT MEANS INCLUDING A PAIR OF CROSS COUPLED PARALLEL CONNECTED AMPLIFIERS CAPABLE OF SELECTIVELY PROVIDING RESPECTIVE STABLE STATES OF AMPLIFICATION AND BISTABLE OPERATION IN DEPENDENCE UPON THE POWER SUPPLY VOLTAGE APPLIED THERETO, ALTERNATING CURRENT VOLTAGE SUPPLY MEANS PROVIDING SAID POWER SUPPLY VOLTAGE CONNECTED IN PARALLEL WITH THE
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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |