US3209197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gaseous glow-discharge tube with monocrystalline metal cathode
Assignee: US Philips Corp
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Filing: 1960-08-08
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Granted: 1965-09-28
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Expires: 1980-08-08
Abstract
No abstract record available.
Inventors
- 👤 Ahsmann Gerardus Josephu Marie
- 👤 Zeger Van Gelder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:11
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/02; H01J17/04; H01J17/06; H01J17/066; H01J17/38; H01J17/40; H01J17/44; H01J2893/00; H01J2893/0064; H01J2893/0065; H01J2893/0066; H01J2893/0068
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A GASEOUS GLOW-DISCHARGE TUBE COMPRISING AN ENVELOPE CONTAINING AN IONIZABLE GASEOUS MEDIUM, ANODE AND CATHODE ELECTRODES WITHIN SAID ENVELOP, SAID CATHODE CONSISTING OF A MONOCRYSTALLINE METAL, AND A COATING OF
Claim 2
Dependent Claim
30 words
A GASEOUS GLOW-DISCHARGE TUBE COMPRISING AN ENVELOPE CONTAINING AN IONIZABLE GASEOUS MEDIUM, ANODE AND CATHODE ELECTRODES WITHIN SAID ENVELOP, SAID CATHODE CONSISTING OF A MONOCRYSTALLINE METAL, AND A COATING OF
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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |