CH375441A -
Apparatus for drawing a carbon arc, e.g. B. for film projector
- Google Patents
Apparatus for drawing a carbon arc, e.g. B. for film projector
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Publication number
CH375441A
CH375441ACH7847959ACH7847959ACH375441ACH 375441 ACH375441 ACH 375441ACH 7847959 ACH7847959 ACH 7847959ACH 7847959 ACH7847959 ACH 7847959ACH 375441 ACH375441 ACH 375441A
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Application filed by Philips NvfiledCriticalPhilips Nv
Publication of CH375441ApublicationCriticalpatent/CH375441A/en