Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Perkins; Willis E.
Address:
Dallas, TX
No. of patents:
1
Patents:












Patent Number Title Of Patent Date Issued
3999750 Artificial snowfall producing apparatus December 28, 1976
An artificial snow machine for display purposes includes a cylindrical container having an inverted conically shaped bottom. High pressure air is admitted to the interior of the container through a port at the apex of the cone to pressurize the container. A motor driven fan is mounted on










 
 
  Recently Added Patents
Near-field transducers for focusing light
Vehicle and communication monitoring
Reflective mask blank and method of manufacturing a reflective mask
System and method for providing restrictions on the location of peer subnet manager (SM) instances in an infiniband (IB) network
Electrical stimulation lead, system, and method
Nonvolatile memory device
Soybean EF1A promoter and its use in constitutive expression of transgenic genes in plants
  Randomly Featured Patents
Seat mountable entertainment system
Building logs with weathertight joints
Antisense modulation of Interferon gamma receptor 1 expression
Developing apparatus and image forming apparatus provided with the same
Developing apparatus
Process and system to package residual quantities of wafer level packages
Stable sulpho-adenosyl-L-methionine (SAMe) salts, particularly suitable for oral pharmaceutical use
Tamper-evident closure seal
Image forming apparatus
Digital camera with separate function and option icons and control switches