US PATENT SUBCLASS 968 / 368
WATCH CRYSTALS; FASTENING OR SEALING OF CRYSTALS; CLOCK GLASSES [G04B 39/00]


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



968 /   HD   HOROLOGY

368WATCH CRYSTALS; FASTENING OR SEALING OF CRYSTALS; CLOCK GLASSES [G04B 39/00] {4}
369  DD  .~> Made of glass [G04B 39/00B]
370  DD  .~> From a material other than glass [G04B 39/00C] {1}
372  DD  .~> With means for magnified reading (combinations with a magnifying glass in general subclass 398) [G04B 39/00G]
373  DD  .~> Arrangements for sealing (sealing the case and winding stem subclass 327) [G04B 39/00K] {1}