US3237041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathodic glow gaseous discharge device
Assignee: General Electric Co
•
Filing: 1962-05-31
•
Granted: 1966-02-22
•
Expires: 1982-05-31
Abstract
No abstract record available.
Inventors
- 👤 Bentley T Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:02
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A THERMIONIC ARC ELECTRIC DISCHARGE LAMP OF THE CATHODIC GLOW TYPE HAVING AN OPERATING VOLTAGE LESS THAN THE IONIZING POTENTIAL OF MERCURY COMPRISING AN ENVELOPE HAVING SEALED THEREIN A PAIR OF RELATIVELY CLOSELY SPACED ELECTRODES INCLUDING AN ANODE AND A THERMIONIC ACTIVATED CATHODE, SAID ENVELOPE CONTAINING A BUFFLER GAS MIXTURE AT A LOW PRESSURE AND A SMALL QUANTITY OF MERCURY, SAID BUFFLER GAS MIXTURE CONSISTING OF ARGON WITH 1 TO 15% XENON AT A PRESSURE IN THE RANGE OF .5 TO 10 MILLIMETERS OF MERCURY.
Claim 2
Dependent Claim
85 words
A THERMIONIC ARC ELECTRIC DISCHARGE LAMP OF THE CATHODIC GLOW TYPE HAVING AN OPERATING VOLTAGE LESS THAN THE IONIZING POTENTIAL OF MERCURY COMPRISING AN ENVELOPE HAVING SEALED THEREIN A PAIR OF RELATIVELY CLOSELY SPACED ELECTRODES INCLUDING AN ANODE AND A THERMIONIC ACTIVATED CATHODE, SAID ENVELOPE CONTAINING A BUFFLER GAS MIXTURE AT A LOW PRESSURE AND A SMALL QUANTITY OF MERCURY, SAID BUFFLER GAS MIXTURE CONSISTING OF ARGON WITH 1 TO 15% XENON AT A PRESSURE IN THE RANGE OF .5 TO 10 MILLIMETERS OF MERCURY.
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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |