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
Crystalline form of zofenopril calcium
Apparatus for preventing overcharge of a battery
Asynchronous task execution
Differential ring oscillator and method for calibrating the differential ring oscillator
Liquid crystal display apparatus
Egg separator
Flip flop shoe
  Randomly Featured Patents
Sealing intersecting vane machines
Illumination module and projection apparatus
Sizing agent for paper
External fixator for Colles' fracture
Determination of non-functioning areas of the g.i. tract using MRI of manganese composition
Preparation of starch reinforced rubber and use thereof in tires
Apodised complex filter
Optoelectronic force sensor
Method and system for providing highly available services based on a load balancing policy and a reusable connection context object
Automated color control in film-to-digital transfer