04377736 is referenced by 30 patents and cites 10 patents.

The relative position of a plurality of holes through a surface of a member, the holes having been generated by high energy means, such as a laser, which vaporizes material of the member to produce a light flash, is inspected and controlled as the holes are being generated using a light sensing means which is responsive to the light flash and which observes the relative positions of the holes being produced. The light sensing means signals a hole pattern comparison means which compares the actual hole pattern with a preselected hole pattern. Adjustment can then be made to reposition the high energy beam if required to correct undesirable error in the actual hole pattern during generation of the holes.

Title
Method and apparatus for removing material from a surface
Application Number
6/292856
Publication Number
4377736
Application Date
August 14, 1981
Publication Date
March 22, 1983
Inventor
John E Adair
Albuquerque
NM, US
John P Tipton
Albuquerque
NM, US
John E Daunt
Albuquerque
NM, US
Agent
Derek P Lawrence
Lee H Sachs
Assignee
General Electric Company
OH, US
IPC
B23K 27/00
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