William P. Atwood, Coon Rapids, MN (US); Graham Langford, Wirral (GB); Michael S. Meyer, Waxhaw, NC (US); Barry S. Lewin, Liverpool (GB); and Martin Wilcockson, St. Helens (GB)
Assigned to 3M Innovative Properties Company, St. Paul, MN (US)
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
Filed on Feb. 10, 2022, as Appl. No. 29/791,820.
Term of patent 15 Years
LOC (14) Cl. 29 - 02
U.S. Cl. D24—110 [D29/124]
The ornamental design for a backframe for self-contained breathing apparatus, as shown and described.