Patent US2874324A successfully refreshed from Google Patents.
US2874324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric gaseous discharge tubes
Assignee: International Standard Electric Corp
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Filing: 1953-07-17
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Granted: 1959-02-17
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Expires: 1973-07-17
Abstract
No abstract record available.
Inventors
- 👤 Klepp George Francis
- 👤 Miller Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:45
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A VOLTAGE STABILIZER ELECTRIC DISCHARGE TUBE OF THE COLD CATHODE TYPE COMPRISING AN ENVELOPE CONTAINING A GAS FILLING OF 97% NEON AND 3% ARGON AT A PRESSURE OF 25+2 MILLMETERS OF MERCURY, AN ANODE AND A CATHODE ACTIVATED WITH CERIUM MISCHMETAL SAID ANODE SPACED FROM SAID CATHODE A GIVEN DISTANCE, SAID DISTANCE BEING SUCH THAT THE ANODE-CATHODE MAINTAINING VOLTAGE OVER A GLOW DISCHARGE CURRENT RANGE OF 5 MA. TO 40 MA. LIES BETWEEN 70 AND 80 VOLTS, THE VARIATION OF VOLTAGE WITH CUARRENT BEING LESS THAN 7 VOLTS.
Claim 2
Dependent Claim
88 words
A VOLTAGE STABILIZER ELECTRIC DISCHARGE TUBE OF THE COLD CATHODE TYPE COMPRISING AN ENVELOPE CONTAINING A GAS FILLING OF 97% NEON AND 3% ARGON AT A PRESSURE OF 25+2 MILLMETERS OF MERCURY, AN ANODE AND A CATHODE ACTIVATED WITH CERIUM MISCHMETAL SAID ANODE SPACED FROM SAID CATHODE A GIVEN DISTANCE, SAID DISTANCE BEING SUCH THAT THE ANODE-CATHODE MAINTAINING VOLTAGE OVER A GLOW DISCHARGE CURRENT RANGE OF 5 MA. TO 40 MA. LIES BETWEEN 70 AND 80 VOLTS, THE VARIATION OF VOLTAGE WITH CUARRENT BEING LESS THAN 7 VOLTS.
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) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |