US3215882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorescent lamp with noble metal amalgamated electrode
Assignee: GTE Sylvania Inc
•
Filing: 1962-12-31
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Granted: 1965-11-02
•
Expires: 1982-12-31
Abstract
No abstract record available.
Inventors
- 👤 Charles L Toomey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:12
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/70; H01J61/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
AN ALTERNATING CURRENT ELECTORN DISCHARGE DEVICE COMPRISING AN ENVELOPE CONTAINING MERCURY, SPACED ELECTRODES ADAPTED TO PROVED AN ELECTIC DISCHARGE BETWEEN SAID ELECTRODES AFTER A HEATING PERIOD, AT LEST ON CONDUCTING ANODIC STRUCTURE ELECTRICALLY CONNECTED TO ONE OF SAID ELECTRODES, AND A COATING OF MERCURY-AMALGAMATIVE, NOBLE METAL COVERING THE MAJOR SURFACE PORTION OF THE ANODIC STRUCTURE SO AS SUBSTANTIALLY TO INHIBIT ELECTRON EMISSION FROM SAID SURFACE PORTION.
Claim 2
Dependent Claim
66 words
AN ALTERNATING CURRENT ELECTORN DISCHARGE DEVICE COMPRISING AN ENVELOPE CONTAINING MERCURY, SPACED ELECTRODES ADAPTED TO PROVED AN ELECTIC DISCHARGE BETWEEN SAID ELECTRODES AFTER A HEATING PERIOD, AT LEST ON CONDUCTING ANODIC STRUCTURE ELECTRICALLY CONNECTED TO ONE OF SAID ELECTRODES, AND A COATING OF MERCURY-AMALGAMATIVE, NOBLE METAL COVERING THE MAJOR SURFACE PORTION OF THE ANODIC STRUCTURE SO AS SUBSTANTIALLY TO INHIBIT ELECTRON EMISSION FROM SAID SURFACE PORTION.
References Cited (Backward Citations)
US3005930A
Cited
US3070721A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |