US3142780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold cathode gas tube counting circuits
Assignee: GTE Sylvania Inc
•
Filing: 1950-03-16
•
Granted: 1964-07-28
•
Expires: 1970-03-16
Abstract
No abstract record available.
Inventors
- 👤 Gerald C Rich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:42
CPC Classifications
H; H03; H03K; H03K23/00; H03K23/82
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A COLD CATHODE GAS TUBE CIRCUIT INCLUDING A GAS TUBE HAVING A COLD CATHODE, AN ANODE AND A SENSITIZED CONTROL ELECTRODE, A RESISTIVE VOLTAGE DIVIDER HAVING ITS NEGATIVE TERMINAL CONNECTED TO SAID CATHODE AND HAVING A TAP CON-
Claim 2
Dependent Claim
38 words
A COLD CATHODE GAS TUBE CIRCUIT INCLUDING A GAS TUBE HAVING A COLD CATHODE, AN ANODE AND A SENSITIZED CONTROL ELECTRODE, A RESISTIVE VOLTAGE DIVIDER HAVING ITS NEGATIVE TERMINAL CONNECTED TO SAID CATHODE AND HAVING A TAP CON-
References Cited (Backward Citations)
US2125073A
Cited
US2401657A
Cited
US2349849A
Cited
US2422583A
Cited
GB584422A
Cited
US2498908A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |