Closet door caster

A quick learner from Washington State says:
I am looking for replacements for this closet door caster. Markings: 3/4 rear on backside of actual caster piece. On separate piece it looks like a logo of LB; then"to lower door" and US PAT 3041657.

Thank you!
Thumbnail of the uploaded file named Back View
Thumbnail of the uploaded file named Front View
Thumbnail of the uploaded file named Back View
Thumbnail of the uploaded file named Front View
Thumbnail of the uploaded file named Wheel Diameter
A quick learner from Washington State says:
Here are some additional pictures of the closet door caster hardware I am trying to locate.

Thank you!
Thumbnail of the uploaded file named Front Dimension
Thumbnail of the uploaded file named Length
Thumbnail of the uploaded file named Wheel Thickness
Thumbnail of the uploaded file named Width
Thumbnail of the uploaded file named Width
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Paul from SWISCO responded:

Hello, thank you for posting,

Your doors are using the old original Lawrence Brothers closet door rollers. Unfortunately Lawrence Brothers discontinued the closet door hardware for sometime now. We carry a generic brand that might work for your door track. Please look and compare the 23-031 or 23-047 rollers to yours. Let us know what you think! 

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