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US3265923A Expired / Lapsed US ⏱️ 0.0 years remaining

Baseless double-ended electric incandescent lamp

Assignee: Philips North America LLC
•
Filing: 1963-03-19
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Granted: 1966-08-09
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Expires: 1983-03-19
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Abstract

No abstract record available.

Inventors

  • 👤 Luigi M Preziosi
  • 👤 John J Zecca

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 22:45
CPC Classifications
F; F21; F21V; F21V19/00; F21V19/0005; H; H01; H01K; H01K1/00; H01K1/38

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 200 words
A BASELESS DOUBLE-ENDED ELECTRIC INCANDESCENT LAMP COMPRISING, A LENGTH OF VITREOUS TUBING OF SUBSTANTIALLY UNIFORM DIAMETER, A PRESS SEAL AT EACH OF END OF SAID TUBING THAT EXTENDS ACROSS THE FULL WIDTH OF AND CLOSES OFF SAID TUBING, SAID PRESS SEALS COMPRISING A PAIR OF SPACED ELONGATES BOSSES AND A RECESSED PORTION THEREBETWEEN WHICH EXTEND FROM THE ENDS OF THE RESPECTIVE SEALS TOWARD THE BULBOUS BODY PORTION OF SAID TUBING, EACH OF SAID BOSSES HAVING A TRANSVERSE INWARDLYTAPERED PORTION THAT IS LOCATED IMMEDIATELY ADJACENT TO AND EXTENDS ALONG THE SIDE EDGE OF THE ASSOCIATED RECESS, AN ELONGATED FILAMENT EXTENDING LONGITUDINALLY WITHIN SAID TUBING, AND A LEAD-IN CONDUCTOR SEALED THROUGH EACH OF SAID PRESS SEALS AND ATTACHED TO THE END OF THE FILAMENT LOCATED AT THAT END OF THE TUBING, EACH OF SAID CONDUCTORS BEING SEALED THROUGH A PORTION OF THE RESPECTIVE PRESS SEALS SUCH THAT SAID FILAMENT IS SUSPENDED WITHIN SAID TUBING AND THE FREE ENDS OF SAID CONDUCTORS EMERGE FROM THE ENDS OF SAID SEALS, THE EXPOSED ENDS OF SAID LEAD-IN CONDUCTORS BEING BENT AROUND THE ENDS OF THE RESPECTIVE PRESS SEALS AND SEATED WITHIN THE RECESSES IN SAID SEALS AND THEREBY FORMING ACCURATELY LOCATED CONTACTS FOR SAID LAMP.
Claim 2
Dependent Claim 200 words
A BASELESS DOUBLE-ENDED ELECTRIC INCANDESCENT LAMP COMPRISING, A LENGTH OF VITREOUS TUBING OF SUBSTANTIALLY UNIFORM DIAMETER, A PRESS SEAL AT EACH OF END OF SAID TUBING THAT EXTENDS ACROSS THE FULL WIDTH OF AND CLOSES OFF SAID TUBING, SAID PRESS SEALS COMPRISING A PAIR OF SPACED ELONGATES BOSSES AND A RECESSED PORTION THEREBETWEEN WHICH EXTEND FROM THE ENDS OF THE RESPECTIVE SEALS TOWARD THE BULBOUS BODY PORTION OF SAID TUBING, EACH OF SAID BOSSES HAVING A TRANSVERSE INWARDLYTAPERED PORTION THAT IS LOCATED IMMEDIATELY ADJACENT TO AND EXTENDS ALONG THE SIDE EDGE OF THE ASSOCIATED RECESS, AN ELONGATED FILAMENT EXTENDING LONGITUDINALLY WITHIN SAID TUBING, AND A LEAD-IN CONDUCTOR SEALED THROUGH EACH OF SAID PRESS SEALS AND ATTACHED TO THE END OF THE FILAMENT LOCATED AT THAT END OF THE TUBING, EACH OF SAID CONDUCTORS BEING SEALED THROUGH A PORTION OF THE RESPECTIVE PRESS SEALS SUCH THAT SAID FILAMENT IS SUSPENDED WITHIN SAID TUBING AND THE FREE ENDS OF SAID CONDUCTORS EMERGE FROM THE ENDS OF SAID SEALS, THE EXPOSED ENDS OF SAID LEAD-IN CONDUCTORS BEING BENT AROUND THE ENDS OF THE RESPECTIVE PRESS SEALS AND SEATED WITHIN THE RECESSES IN SAID SEALS AND THEREBY FORMING ACCURATELY LOCATED CONTACTS FOR SAID LAMP.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1969-08-08 1970-02-07 1970-08-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1973-08-08 1974-02-07 1974-08-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1977-08-08 1978-02-07 1978-08-09 $7700.00 Window Closed / Lapsed

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