Process for marking a glass object and article

Details Process for marking a glass object and article Process for marking a glass object and article

1988-12-27

1990-01-23

Wieder, Kenneth

Electric lamp and discharge devices

With gas or vapor

Envelope with particular structure

313272, 445 12, 65138, 106 19, 1062864, 427106, 4271263, 428 344, H01J 924, H01K 128

Patent

active

048960748

ABSTRACT:
A process of manufacture and an article produced by the process in the form of a lead glass substrate. The substrate is discretely marked during the manufacturing process by directing a flame upon it that is deficient in oxygen to provide a darkened or black marking in the glass surface. The invention is especially useful for marking electric lamps.

REFERENCES:
patent: 4766339 (1988-08-01), Berry et al.

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