Image: 1968 Parsons Bender fig 2-3-4

Description: Patent drawing for Parsons-White String Bender, figures 2, 3 and 4, patent 3,512,443, title Shoulder Strap Control for String Instruments.
Title: 1968 Parsons Bender fig 2-3-4
Credit: US Patent Office, original at http://patft.uspto.gov/ but a better working copy from http://www.google.com/patents?id=VcR0AAAAEBAJ&printsec=drawing&zoom=4&dq=3512443
Author: Gene Parsons and Clarence White
Permission: This work is in the public domain in the United States because it was published in the United States between 1925 and 1977, inclusive, without a copyright notice. For further explanation, see Commons:Hirtle chart as well as a detailed definition of "publication" for public art. Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.
Usage Terms: Public domain
License: Public domain
Attribution Required?: No