US D593,587 S
Binocular interpupillary distance lock apparatus
Samuel J. Hamilton, Mount Horeb, Wis. (US)
Assigned to Sheltered Wings, Inc., Middletown, Wis. (US)
Filed on Mar. 12, 2008, as Appl. No. 29/305,041.
Term of patent 14 Years
LOC (9) Cl. 16 - 06
U.S. Cl. D16—133  [D16/130]
OG exemplary drawing
 
The ornamental design for a binocular interpupillary distance lock apparatus, as shown and described.