FR38456E - Spark plug improvements - Google Patents

Spark plug improvements

Info

Publication number: FR38456E
Authority: FR; France
Prior art keywords: spark plug; spark; plug; plug improvements
Prior art date: 1929-12-17
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

Other languages

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.)

Compagnie Francaise Thomson Houston SA

Original Assignee

Compagnie Francaise Thomson Houston SA

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.)

1929-12-17

Filing date

1929-12-17

Publication date

1931-06-06

1929-12-17 Application filed by Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA

1931-06-06 Application granted granted Critical

1931-06-06 Publication of FR38456E publication Critical patent/FR38456E/en

Status Expired legal-status Critical Current

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
- H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
- H01T13/34—Sparking plugs characterised by features of the electrodes or insulation characterised by the mounting of electrodes in insulation, e.g. by embedding

FR38456D 1929-12-17 1929-12-17 Spark plug improvements Expired FR38456E (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR38456T		1929-12-17

Publications (1)

Publication Number	Publication Date
FR38456E true FR38456E (en)	1931-06-06

Family

ID=8674949

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR38456D Expired FR38456E (en)	1929-12-17	1929-12-17	Spark plug improvements

Country Status (1)

Country	Link
FR (1)	FR38456E (en)

1929
- 1929-12-17 FR FR38456D patent/FR38456E/en not_active Expired

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