METHOD FOR MAKING TWO-PIECE HOLLOW DEVITRIFIED MIRROR BLANK

• US 3,484,327 A
• Filed: 07/01/1965
• Issued: 12/16/1969
• Est. Priority Date: 03/05/1965
• Status: Expired due to Term

• Current Assignee: Robert R. Denman
• Original Assignee: Robert R. Denman
• Inventors: Denman, Robert R.
• Application Number:
  US04/468,762
• Time in Patent Office: 1,629 Days
• US Class Current: 428/188
• CPC Class Codes: C03B 19/02 by casting molten glass, e.g. injection moulding
• CPC Class Codes: C03B 23/203 Uniting glass sheets C03B23/24 takes precedence
• CPC Class Codes: C03B 32/02 Thermal crystallisation, e.g. for crystallising glass bodies into glass-ceramic articles C03B27/012 takes precedence
• CPC Class Codes: C03C 10/0027 containing SiO2, Al2O3, Li2O as main constituents
• CPC Class Codes: G02B 5/08 Mirrors vehicle mirrors involving special optical features B60R1/08
• CPC Class Codes: Y10T 428/24744 Longitudinal or transverse tubular cavity or cell

Claims