US3211942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric incandescent lamp
Assignee: General Electric Co
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Filing: 1963-06-20
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Granted: 1965-10-12
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Expires: 1983-06-20
Abstract
No abstract record available.
Inventors
- 👤 Emmett H Wiley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:24
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/38; H01K1/62; H01K1/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A COMPACT HIGH EFFICIENCY ELECTRIC LAMP COMPRISING A SUBSTANTIALLY TUBULAR LIGHT-TRANSMITTING ENVELOPE; A COILED-COIL INCANDESCIBLE FILAMENT OF TUNGSTEN WIRE EXTENDING LONGITUDINALLY WITHIN SAID ENVELOPE HAVING A SHORT SOURCE LENGTH AND A VOLTAGE OF MORE THAN 60 VOLTS PER INCH OF SAID SOURCE LENGTH; THE ENVELOPE HAVING A DIAMETER GREATER THAN 1/5 OF THE SOURCE LENTGH; A FILLING IN SAID ENDVELOPE FOR NITROGEN GAS AND A QUANTITY OF IODINE SUFFICIENT TO PROMOTE A REGENERATIVE GETTER ACTION; PINCH SEALS CONSTRICTING THE INTERIOR OF THE ENVELOPE AND HERMETICALLY SEALING THE ENDS OF THE ENVELOPE; LEAD-IN CONDUCTORS ENCLOSED IN AND EXTENDING EXTERNALLY OF SAID PINCH SEALS, AT LEAST ONE OF SAID LEAD-IN CONDUCTORS TERMINATING WITHIN ITS ASSOCI-
Claim 2
Dependent Claim
113 words
A COMPACT HIGH EFFICIENCY ELECTRIC LAMP COMPRISING A SUBSTANTIALLY TUBULAR LIGHT-TRANSMITTING ENVELOPE; A COILED-COIL INCANDESCIBLE FILAMENT OF TUNGSTEN WIRE EXTENDING LONGITUDINALLY WITHIN SAID ENVELOPE HAVING A SHORT SOURCE LENGTH AND A VOLTAGE OF MORE THAN 60 VOLTS PER INCH OF SAID SOURCE LENGTH; THE ENVELOPE HAVING A DIAMETER GREATER THAN 1/5 OF THE SOURCE LENTGH; A FILLING IN SAID ENDVELOPE FOR NITROGEN GAS AND A QUANTITY OF IODINE SUFFICIENT TO PROMOTE A REGENERATIVE GETTER ACTION; PINCH SEALS CONSTRICTING THE INTERIOR OF THE ENVELOPE AND HERMETICALLY SEALING THE ENDS OF THE ENVELOPE; LEAD-IN CONDUCTORS ENCLOSED IN AND EXTENDING EXTERNALLY OF SAID PINCH SEALS, AT LEAST ONE OF SAID LEAD-IN CONDUCTORS TERMINATING WITHIN ITS ASSOCI-
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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |