Metal working – Toothed-cylinder making apparatus
Patent
1990-10-01
1992-02-11
Echols, P. W.
Metal working
Toothed-cylinder making apparatus
20419215, H04R 1700
Patent
active
050865498
ABSTRACT:
The use of electrically conducting oxides, that permit the diffusion of hogen through the electrode material, as electrodes in the air-or H-sweeping of quartz.
REFERENCES:
patent: H952 (1991-08-01), Gualtieri
patent: 4311938 (1982-01-01), Ballato et al.
patent: 4916470 (1990-04-01), Kovacs et al.
Echols P. W.
Gordon Roy E.
The United States of America as represented by the Secretary of
Zelenka Michael
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