US3075119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glow-discharge indicator tube
Assignee: US Philips Corp
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Filing: 1960-07-15
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Granted: 1963-01-22
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Expires: 1980-07-15
Abstract
No abstract record available.
Inventors
- 👤 Botden Theodoor Peter Johannes
- 👤 Frouws Simon Mari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:25
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/48; H01J17/49; H01J2893/00; H01J2893/0069
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
AN INDICATING TUBE OF THE GLOW-LAMP TYPE COMPRISING AN ENVELOPE HAVING A TRANSPARENT VIEWING PORTION, AND WITHIN THE ENVELOPE IN VIEWABLE POSITION A PLURALITY OF CHARACTER-LIKE CATHODES POSITIONED IN PARALLEL PLANES, A GRID-LIKE ANODE POSITIONED BETWEEN EACH PAIR OF SUCCESSIVE CATHODES, AN IONIZABLE MEDIUM, MEANS TO CONNECT THE CATHODES AND THE ANODES, RESPECTIVELY, IN PARALLEL, AND AN AUXILIARY ANODE POSITIONED ADJACENT EACH CATHODE A DISTANCE AT WHICH WITH A SMALL POSITIVE POTENTIAL APPLIED THERETO RELATIVE TO THE ANODE A DISCHARGE IS INITIATED BETWEEN THE CATHODE AND ANODE ASSOCIATED THEREWITH.
Claim 2
Dependent Claim
89 words
AN INDICATING TUBE OF THE GLOW-LAMP TYPE COMPRISING AN ENVELOPE HAVING A TRANSPARENT VIEWING PORTION, AND WITHIN THE ENVELOPE IN VIEWABLE POSITION A PLURALITY OF CHARACTER-LIKE CATHODES POSITIONED IN PARALLEL PLANES, A GRID-LIKE ANODE POSITIONED BETWEEN EACH PAIR OF SUCCESSIVE CATHODES, AN IONIZABLE MEDIUM, MEANS TO CONNECT THE CATHODES AND THE ANODES, RESPECTIVELY, IN PARALLEL, AND AN AUXILIARY ANODE POSITIONED ADJACENT EACH CATHODE A DISTANCE AT WHICH WITH A SMALL POSITIVE POTENTIAL APPLIED THERETO RELATIVE TO THE ANODE A DISCHARGE IS INITIATED BETWEEN THE CATHODE AND ANODE ASSOCIATED THEREWITH.
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) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |