Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Gordon; Douglas C.
Address:
Kinburn, CA
No. of patents:
1
Patents:












Patent Number Title Of Patent Date Issued
4891666 Copy indicator for a document January 2, 1990
A printed background pattern for a document is described, wherein the pattern masks a copy indicator which is revealed upon making a copy of the pattern using a digital optical scanning means. The background pattern comprises an area of microprinting with a type size having a line re










 
 
  Recently Added Patents
Method and apparatus for blind signal extraction
Xylitol-based anti-mucosal compositions and related methods and compositions
Rear bumper for an automobile
Semiconductor devices having through electrodes and methods of fabricating the same
Breathing mask
Compounds, compositions and methods for reducing lipid levels
Light-emitting diode package and method for manufacturing the same
  Randomly Featured Patents
Toilet fixture
Safety arrangement
Vascular prosthesis
Method and apparatus for on-board calibration in pulse-echo acoustic ranging system
Exercise assist device
Cubic perovskite crystal structure, a process of preparing the crystal structure, and articles constructed from the crystal structure
Electronic camera with battery capacity detection capability
Flexible multicore electrical cable
Rotary-type hinge device for a portable terminal
Home videoconferencing system