FR491644A - Perfectionnements apportés à la fabrication des bougies d'allumage - Google Patents

Perfectionnements apportés à la fabrication des bougies d'allumage

Info

Publication number
FR491644A
FR491644A FR491644A FR491644DA FR491644A FR 491644 A FR491644 A FR 491644A FR 491644 A FR491644 A FR 491644A FR 491644D A FR491644D A FR 491644DA FR 491644 A FR491644 A FR 491644A
Authority
FR
France
Prior art keywords
manufacture
spark plugs
spark
plugs
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
FR491644A
Other languages
English (en)
Inventor
Michael John Willcocks
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR491644A publication Critical patent/FR491644A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00—Sparking plugs
    • H01T13/02—Details
    • H01T13/16—Means for dissipating heat
FR491644A 1917-09-29 1918-09-10 Perfectionnements apportés à la fabrication des bougies d'allumage Expired FR491644A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB491644X 1917-09-29

Publications (1)

Publication Number Publication Date
FR491644A true FR491644A (fr) 1919-06-10

Family

ID=1527622

Family Applications (1)

Application Number Title Priority Date Filing Date
FR491644A Expired FR491644A (fr) 1917-09-29 1918-09-10 Perfectionnements apportés à la fabrication des bougies d'allumage

Country Status (1)

Country Link
FR (1) FR491644A (fr)

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