Resources Contact Us Home
Browse by Category: Main > Tools & Hardware
Class Information
Number: 451/389
Name: Abrading > Work holder > Drop or dop stick
Description: Work holder especially adapted for holding a jewel while being faceted or otherwise abraded comprising the member on which the jewel is placed or comprising structure for supporting that member.

Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
RE30357 Device for grinding a cabachon Aug. 5, 1980
4202138 Bezel grinding attachment for a dop stick holder May. 13, 1980
4201018 Cabbing device for gemstones May. 6, 1980
4174592 Lapidary device Nov. 20, 1979
4167085 Mounting assembly for gem blanks Sep. 11, 1979
4110937 Holding means for gem stones Sep. 5, 1978
4106240 Apparatus for precisely indexing the orientation of a portion of a device with respect to a support structure of the device Aug. 15, 1978
4084352 Lapidary machine Apr. 18, 1978
4010575 Device for grinding a cabachon Mar. 8, 1977
3975867 Hand-held gem dop Aug. 24, 1976
3948006 Diamond faceting platform Apr. 6, 1976
3940888 Faceting device for gemstones Mar. 2, 1976

1 2

  Recently Added Patents
Coding circuitry for difference-based data transformation
Polarization preserving front projection screen microstructures
Polyolefin and composition for pipe systems and sheets
Method and device for managing devices in device management system
Structure of circuit board and method for fabricating the same
Audit planning
Reception circuit and signal reception method
  Randomly Featured Patents
Communications headset
Steel for induction quenching and machinery structural parts using the same
Button cover
Method to manufacture gas monitoring test strips
Eraser for a pencil
Level shifter circuit with a thin gate oxide transistor
Apparatus for separating plastic chips
Two-terminal type non-linear element, manufacturing method thereof and liquid crystal display panel
Method and arrangement for power control
Electrodeless low-pressure discharge lamp