Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Bartholow; Paul A.
Address:
St. Louis Park, MN
No. of patents:
2
Patents:












Patent Number Title Of Patent Date Issued
5600348 Adjustable tip light pen February 4, 1997
A light pen for use in data imput to data processing equipment, has an adjustable tip assembly wherein the tip switch sensitivity and tactile feel or feedback to the user can be varied according to user preferences and particular applications. In one mode, the pen can be set for a normal
4677428 Cordless light pen June 30, 1987
A cordless light pen for use with a cathode ray tube display screen as a data input for a digital computer. Contained within the exterior barrel of the pen is a depressible tip having a core made from a plastic which has been treated and whose index of refraction causes light entering in










 
 
  Recently Added Patents
Packaging sleeve
Voltage level shift circuits and methods
Codeword-enhanced peer-to-peer authentication
Pixel structure of organic light emitting device
Discharge lamp comprising coated electrode
Fringe field switching mode liquid crystal display panel
Nuclear fission reactor, a vented nuclear fission fuel module, methods therefor and a vented nuclear fission fuel module system
  Randomly Featured Patents
Vacuum jacketed electrode for phase change memory element
Constant velocity ratio universal joint of the tripode type
Calibration of electrodes
Method and device for driving an electroluminescence matrix display
Extruder plate for generally triangular shaped extruder inserts
Clamping jig
System for displaying images and method with a peripheral region having a mosaic color filter pattern thereon that has pillars and channels and an opening along its boundary
Magnetoelastic torque sensor with ambient field rejection
Toilet seat cover
Stair-climbing hand truck