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CH68991A - Process and apparatus for the production of black lead - Google Patents

Process and apparatus for the production of black lead

Info

Publication number
CH68991A
CH68991A CH68991A CH68991DA CH68991A CH 68991 A CH68991 A CH 68991A CH 68991 A CH68991 A CH 68991A CH 68991D A CH68991D A CH 68991DA CH 68991 A CH68991 A CH 68991A
Authority
CH
Switzerland
Prior art keywords
production
black lead
black
lead
Prior art date
Application number
CH68991A
Other languages
German (de)
Inventor
Emil Barthelmess
Original Assignee
Emil Barthelmess
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 Emil Barthelmess filed Critical Emil Barthelmess
Publication of CH68991A publication Critical patent/CH68991A/en

Links

CH68991A 1914-03-21 1914-03-21 Process and apparatus for the production of black lead CH68991A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH68991T 1914-03-21

Publications (1)

Publication Number Publication Date
CH68991A true CH68991A (en) 1915-05-17

Family

ID=4316796

Family Applications (1)

Application Number Title Priority Date Filing Date
CH68991A CH68991A (en) 1914-03-21 1914-03-21 Process and apparatus for the production of black lead

Country Status (1)

Country Link
CH (1) CH68991A (en)

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