US3392298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorescent lamp using an indiummercury amalgam band for pressure control
Assignee: GTE Sylvania Inc
•
Filing: 1962-08-31
•
Granted: 1968-07-09
•
Expires: 1982-08-31
Abstract
No abstract record available.
Inventors
- 👤 Richard A Menelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:26
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/70; H01J61/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
AN ELECTRICAL DISCHARGE LAMP COMPRISING AN ENCLOSING ENVELOPE AT LEAST PART OF WHICH LIGHT-TRANSMISSIVE, ELECTRODES IN SAID ENVELOPE, A SMALL QUANTITY OF MERCURY IN SAID ENVELOPE, AND A RING OF INDIUM ON THE INSIDE SURFACE OF SAID ENVELOPE NEAR THE MIDDLE THEREOF.
Claim 2
Dependent Claim
42 words
AN ELECTRICAL DISCHARGE LAMP COMPRISING AN ENCLOSING ENVELOPE AT LEAST PART OF WHICH LIGHT-TRANSMISSIVE, ELECTRODES IN SAID ENVELOPE, A SMALL QUANTITY OF MERCURY IN SAID ENVELOPE, AND A RING OF INDIUM ON THE INSIDE SURFACE OF SAID ENVELOPE NEAR THE MIDDLE THEREOF.
References Cited (Backward Citations)
US3007071A
Cited
US3152278A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |