Unit 032
Inventor as printed: John M. Dinwiddie.
Patent: US1334233A.
Date as printed: Mar. 16, 1920.
Title: Paper-clip.
Material: a single piece of wire.
Form:
- bent into an outer spring clamping member and an inner spring clamping member
- outer member: arcuately bowed arms, bent in opposite directions
- inner member: curved portions, bent arcuately in opposite directions
No length was stated. None is added.
Source: https://patents.google.com/patent/US1334233A/en
Not a Gem double oval. Not Cole. Not Mink. Not Du Bois. Not Comlcy.
Unit 031 remains Du Bois and Harter.