C - Chemistry – Metallurgy – 03 – C
Patent
C - Chemistry, Metallurgy
03
C
149/17
C03C 15/00 (2006.01) C30B 33/00 (2006.01)
Patent
CA 1245956
ABSTRACT OF THE DISCLOSURE Quartz crystal blanks are chemically polished by thoroughly cleaning the blanks, treating the quartz crystal blanks with an etching solution at high pressures in a high pressure vessel while agitating to circulate the etchant and maintaining a uniform temperature throughout the etching solution, cooling the vessel, removing the quartz crystal blanks, rinsing thoroughly with water and spinning dry.
506379
Aspila Kalevi P.
The Government Of The United States As Represented By The Secret
LandOfFree
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