OATEY Toilet Flange Extension Kit, corrects flange elevations ranging from 1/4" to 1-5/8"
Nenesupply Compatible Flange for Spectra S2 Spectra S1 Spectra 9 Plus Breastpump. Made by Nenesupply. Not Original Spectra Pump Parts Not Original Spectra S2 Accessories Not Original Spectra Flange
EATFL1-6 Triple Flange Sleeves for SE model earphones (except SE102MPA), SCL3, SCL4, SCL5, E3c, E4c, E5c, and E500 Versions
Little Giant Velocity, Model 26 - Type IA - 300 lbs rated, aluminum articulating ladder
I find this video interesting in attempting to understand the development of industry though I can not pin it though this video since there was so little background information provided.