US3301623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing double-ended electric lamps
Assignee: Philips North America LLC
•
Filing: 1965-01-21
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Granted: 1967-01-31
•
Expires: 1985-01-21
Abstract
No abstract record available.
Inventors
- 👤 Luigi M Preziosi
- 👤 John J Zecca
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:22
CPC Classifications
H; H01; H01K; H01K3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
THE METHOD OF MANUFACTURING A BASELESS DOUBLEENDED ELECTRIC INCANDESCENT LAMP COMPRISING, ATTACHING A LEAD-IN CONDUCTOR TO EACH END OF AN ELONGATE FILAMENT TO PROVIDE A MOUNT, POSITIONING A VITREOUS EXHAUST TUBE ALONGSIDE ONE OF THE LEAD-IN CONDUCTOR PORTIONS OF SAID MOUNT, THREADING AN ELONGATED VITREOUS ENVELOPE OVER SAID MOUNT AND THE ADJACENT END SEGMENT OF SAID EXHAUST TUBE, POSITIONING SAID ENVELOPE RELATIVE TO SAID MOUNT SO THAT THE END OF THE ENVELOPE OVERLIES THE END SEGMENT OF SAID EXHAUST TUBE AND THE ENDS OF EACH OF THE LEAD-IN CONDUCTOR PORTIONS OF SAID MOUNT THAT ARE ATTACHED TO SAID FILAMENT, HEATING THE END OF SAID ENVELOPE THAT ENCIRCLES THE EXHAUST TUBE SEGMENT AND ADJACENT LEAD-IN CONDUCTOR UNTIL IT BECOMES PLASTIC, COMPRESSING THE HEATED END OF SAID ENVELOPE AND FORMING IT INTO A FULL-PRESS SEAL THAT IS HERMETICALLY UNITED WITH THE UNDERLYING SEGMENT OF SAID LEAD-IN CONDUCTOR AND IS FUSED WITH BUT DOES NOT CLOSE THE AFORESAID EXHAUST TUBE SEGMENT,
Claim 2
Independent Claim
158 words
THE METHOD OF MANUFACTURING A BASELESS DOUBLEENDED ELECTRIC INCANDESCENT LAMP COMPRISING, ATTACHING A LEAD-IN CONDUCTOR TO EACH END OF AN ELONGATE FILAMENT TO PROVIDE A MOUNT, POSITIONING A VITREOUS EXHAUST TUBE ALONGSIDE ONE OF THE LEAD-IN CONDUCTOR PORTIONS OF SAID MOUNT, THREADING AN ELONGATED VITREOUS ENVELOPE OVER SAID MOUNT AND THE ADJACENT END SEGMENT OF SAID EXHAUST TUBE, POSITIONING SAID ENVELOPE RELATIVE TO SAID MOUNT SO THAT THE END OF THE ENVELOPE OVERLIES THE END SEGMENT OF SAID EXHAUST TUBE AND THE ENDS OF EACH OF THE LEAD-IN CONDUCTOR PORTIONS OF SAID MOUNT THAT ARE ATTACHED TO SAID FILAMENT, HEATING THE END OF SAID ENVELOPE THAT ENCIRCLES THE EXHAUST TUBE SEGMENT AND ADJACENT LEAD-IN CONDUCTOR UNTIL IT BECOMES PLASTIC, COMPRESSING THE HEATED END OF SAID ENVELOPE AND FORMING IT INTO A FULL-PRESS SEAL THAT IS HERMETICALLY UNITED WITH THE UNDERLYING SEGMENT OF SAID LEAD-IN CONDUCTOR AND IS FUSED WITH BUT DOES NOT CLOSE THE AFORESAID EXHAUST TUBE SEGMENT,
References Cited (Backward Citations)
US3156841A
Cited
US3093768A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |