US2846610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: International Business Machines Corp
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Filing: 1956-12-07
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Granted: 1958-08-05
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Expires: 1976-12-07
Abstract
No abstract record available.
Inventors
- 👤 William H Dass
- 👤 Robert B Koehler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:06
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/40; H01J17/44; H01J2893/00; H01J2893/0064; H01J2893/0065; H01J2893/0067
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
AN ELECTRON DISCHARGE INDICATOR TUBE COMPRISING AN INERT GAS FILLED ENVELOPE ENCLOSING A TUBULAR CATHODE, A PAIR OF ANODES RESPECTIVELY SPACED FROM THE OPEN ENDS OF THE CATHODE TO SUPPORT A GLOW DISCHARGE BETWEEN ONE OF THE ANODES AND THE CATHODE THAT MAY BE SWITCHED TO THE OTHER ANODE BY A LOW POTENTIAL DIFFERENCE BETWEEN THE ANODES, AND A PHOSPHOR DEPOSIT ON ONE OF THE ANODES
Claim 2
Dependent Claim
66 words
AN ELECTRON DISCHARGE INDICATOR TUBE COMPRISING AN INERT GAS FILLED ENVELOPE ENCLOSING A TUBULAR CATHODE, A PAIR OF ANODES RESPECTIVELY SPACED FROM THE OPEN ENDS OF THE CATHODE TO SUPPORT A GLOW DISCHARGE BETWEEN ONE OF THE ANODES AND THE CATHODE THAT MAY BE SWITCHED TO THE OTHER ANODE BY A LOW POTENTIAL DIFFERENCE BETWEEN THE ANODES, AND A PHOSPHOR DEPOSIT ON ONE OF THE ANODES
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |