CH601547A5CH794775ACH794775ACH601547A5CH 601547 A5CH601547 A5CH 601547A5CH 794775 ACH794775 ACH 794775ACH 794775 ACH794775 ACH 794775ACH 601547 A5CH601547 A5CH 601547A5
Authority
CH
Switzerland
Application number
CH794775A
Inventor
Ralph E Johnson
Original Assignee
Singer Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Singer CofiledCriticalSinger Co
Publication of CH601547A5publicationCriticalpatent/CH601547A5/xx