Gemstone

Development

Group

TM

Gemstone LOGO
Gemstone LOGO

Gemstone

Development

Group

© 2026

™

Contact_Phone

 

Home  1-815-923-2401

Cell  1-815-861-3583

 

Contact_EMail

 

donfstrauss@gmail.com

dfstrauss@hotmail.com

 

SBC WEBsite Master

dfs.sbc.dev@gmail.com

Design Services

Gemstone Group Inc.

Creatied Projects by contract.

Gemstone Group Inc. Stock Certificate
Apple II Card Auto Dailer The Start of Crazy
Apple II Auto Ram Card 1MegaByte
Internal Layers of layer PCB Johnathan Project
Apple II PCB Johnathan Project Main CPU
Apple II PCB Johnathan Project CD Rom Controller CPU

Services Page

815-923-2401

815-861-3583

 

donfstrauss@gmail.com

dfstrauss@hotmail.com

d.f.strauss57@gmail.com

 

SBC WEBMaster

dfs.sbc.dev@gmail.con

Gemstone Group Inc.

Creatied Projects by contract.

Gemstone Group Inc. Stock Certificate
Apple II Card Auto Dailer The Start of Crazy
Apple II Auto Ram Card 1MegaByte
Internal Layers of layer PCB Johnathan Project
Apple II PCB Johnathan Project Main CPU
Apple II PCB Johnathan Project CD Rom Controller CPU

 

17515 E.Johnson

UNION. IL 60180

 

Home  815-923-2401

Cell  815-861-3583

 

donfstrauss@gmail.com

dfs.sbc.dev@gmail.con

dfstrauss@hotmail.com

 

Computer Consulting Services

Computer/Electronics Repair Services

Consulting Services