Magnetically oriented draughting instrument
A Standard patent application filed on 03 April 1987 credited to Knight, Jonathan
;
Frazer, Stephen Oliver
;
Riddiford, Martin
Details
Application number :
72331
Application type :
Standard
Application status :
CEASED
Under opposition :
No
Proceeding type :
Invention title :
Magnetically oriented draughting instrument
Inventor :
Knight, Jonathan
;
Frazer, Stephen Oliver
;
Riddiford, Martin