"Born on" request

Rock Ola 4626289

Sag S'G' 3650947

Thanks

Rock-ola; 4,532,100-4,632,099 Nov.43 to Mar.44
Saginaw Gear; 3,250,020-3,651,519 May 43 to Feb.44
Hope this helps.

Feb. 1944 for your Rock-Ola and no later then Dec. 1943 for your Saginaw Steering Gear S'G'.

I keep bothering you folks with "born on" requests 'cause, obviously, I don't have a source for such. Is such a source available for those who don't have the info?
TIA