GB678636A - - Google Patents

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Publication number
GB678636A
GB678636A GB678636DA GB678636A GB 678636 A GB678636 A GB 678636A GB 678636D A GB678636D A GB 678636DA GB 678636 A GB678636 A GB 678636A
Authority
GB
United Kingdom
Prior art keywords
mullite
firing
spark plug
per cent
vitrification
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.)
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Application number
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English (en)
Publication of GB678636A publication Critical patent/GB678636A/en
Active legal-status Critical Current

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  • Compositions Of Oxide Ceramics (AREA)
GB678636D Active GB678636A (cs)

Publications (1)

Publication Number Publication Date
GB678636A true GB678636A (cs)

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ID=1750449

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GB678636D Active GB678636A (cs)

Country Status (1)

Country Link
GB (1) GB678636A (cs)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4736276A (en) * 1985-05-21 1988-04-05 Hitachi, Ltd. Multilayered ceramic wiring circuit board and the method of producing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4736276A (en) * 1985-05-21 1988-04-05 Hitachi, Ltd. Multilayered ceramic wiring circuit board and the method of producing the same

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