Vintage Poulan Guide bar design

[lorovesgo]

hi, i have a question about this vintage bar design poulan chainsaws used to have, every time i see photos of this design, its on the right side of the bar, is this because there is nothing on the left side? it could be a coincidence, but you never know, so if any of you more knowledgable on the topic can shed some light, i would be really greatful.

Thank you for your time!

 

[rocketnorton]

some pioneer bars are printed on one side only

 

[lorovesgo]

some pioneer bars are printed on one side only

were Pioneer bars manufactured by the same factory that made the poulan bars?

even if not, its nice to have a different brand doing the same thing, good way to build probability