[SCG] glass washer bottles

[Gary Swiatowy]

Just ran across an old triangular glass washer bottle and while cleaning it
up noticed it said on the bottom "RD Canada 1961"

 

Also: " Patented Adell Chemical Company Detroit Mich."

 

Were these all date coded by year?

 

Were they all made in Canada?

 

Or were they made for Canadian production cars?

 

Just curious, I actually never noted the writing on the bottom before.

 

Gary Swiatowy