METHOD OF MAKING A SCREEN STENCIL

Title:

METHOD OF MAKING A SCREEN STENCIL

United States Patent 3538847

Inventors:

Heilman, David C.

Publication Date:

11/10/1970

Export Citation:

Assignee:

GEN MOTORS CORP

Primary Class:

430/308

Other Classes:

101/128.21

International Classes:

B41C1/14; G03F7/12; H05K3/00; H05K3/12; B41C1/14; G03F7/12; H05K3/00; H05K3/12; (IPC1-7): B30B9/06

View Patent Images:

Download PDF 3538847 PDF help