IT958564B - IMPROVEMENT IN BULBS FOR INCANDESCENT BULBS - Google Patents

IMPROVEMENT IN BULBS FOR INCANDESCENT BULBS

Info

Publication number
IT958564B
IT958564B IT50016/72A IT5001672A IT958564B IT 958564 B IT958564 B IT 958564B IT 50016/72 A IT50016/72 A IT 50016/72A IT 5001672 A IT5001672 A IT 5001672A IT 958564 B IT958564 B IT 958564B
Authority
IT
Italy
Prior art keywords
bulbs
improvement
incandescent
incandescent bulbs
Prior art date
Application number
IT50016/72A
Other languages
Italian (it)
Original Assignee
Marinace R
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Marinace R filed Critical Marinace R
Application granted granted Critical
Publication of IT958564B publication Critical patent/IT958564B/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K9/00—Lamps having two or more incandescent bodies separately heated
    • H01K9/02—Lamps having two or more incandescent bodies separately heated to provide substitution in the event of failure of one of the bodies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/42—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp
    • H01K1/46—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp supported by a separate part, e.g. base, cap
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/62—One or more circuit elements structurally associated with the lamp
    • H01K1/66—One or more circuit elements structurally associated with the lamp with built-in fuse
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K9/00—Lamps having two or more incandescent bodies separately heated
    • H01K9/02—Lamps having two or more incandescent bodies separately heated to provide substitution in the event of failure of one of the bodies
    • H01K9/04—Lamps having two or more incandescent bodies separately heated to provide substitution in the event of failure of one of the bodies with built-in manually operated switch
IT50016/72A 1971-05-04 1972-05-03 IMPROVEMENT IN BULBS FOR INCANDESCENT BULBS IT958564B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14019471A 1971-05-04 1971-05-04

Publications (1)

Publication Number Publication Date
IT958564B true IT958564B (en) 1973-10-30

Family

ID=22490152

Family Applications (1)

Application Number Title Priority Date Filing Date
IT50016/72A IT958564B (en) 1971-05-04 1972-05-03 IMPROVEMENT IN BULBS FOR INCANDESCENT BULBS

Country Status (6)

Country Link
US (1) US3673534A (en)
DE (1) DE2221854A1 (en)
FR (1) FR2135244A1 (en)
GB (1) GB1337538A (en)
IT (1) IT958564B (en)
NL (1) NL7205975A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4121134A (en) * 1977-10-27 1978-10-17 James Francis Fontenelle Rotatable multiple filament lamp and socket adapter
FR2754936A1 (en) * 1996-10-22 1998-04-24 Soares Duarte Antoine Dual filament incandescent lamp allowing use after first filament has failed
US6583536B1 (en) * 2000-02-15 2003-06-24 James W Gibboney, Jr. Multiple, sequential filament lamp
US20020101144A1 (en) * 2001-01-26 2002-08-01 Pan Wun Fang Christmas bulb structure

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1551463A (en) * 1925-08-25 Canada
US966812A (en) * 1909-04-09 1910-08-09 Harry S Clark Incandescent lamp.
US1460143A (en) * 1920-08-06 1923-06-26 Ryzowicz Louis Incandescent lamp
US1449627A (en) * 1921-12-14 1923-03-27 Rohner Emil Electric incandescent lamp
DE503836C (en) * 1927-09-30 1930-07-26 Patra Patent Treuhand Shunt resistor for electric light bulbs to be connected in series and other consumer devices
US3260888A (en) * 1962-11-19 1966-07-12 Jr John K Webb Two filament lamp with selector or switch
US3296400A (en) * 1966-03-07 1967-01-03 John A Kienzle Light bulbs, fuses and the like

Also Published As

Publication number Publication date
NL7205975A (en) 1972-11-07
GB1337538A (en) 1973-11-14
DE2221854A1 (en) 1972-11-16
FR2135244A1 (en) 1972-12-15
US3673534A (en) 1972-06-27

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