Illinois Society of Architects · Chicago · leaf 285
I ro Knifc-bladc Type Economy Fuse On December 1, 1919, Economy Fuses were approved bythe Underwriters Laboratories—the first line using an in-expensive bare renewal link for restoring a blown fuse to itsoriginal efficiency to be awarded the **Und. Lab. Inspected label for all capacities from 0 to…
Architecture · Building · Architects
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
