Title:
Bladder structure
United States Patent 2884646


Inventors:
Robert, Alber
Application Number:
US62785756A
Publication Date:
05/05/1959
Filing Date:
12/12/1956
Assignee:
Alcosa, Ets
Primary Class:
Other Classes:
2/23, 36/2R, 36/71, 128/DIG.20
International Classes:
A43B5/04; A61F5/01
View Patent Images:
US Patent References:
2774152Article of footwear1956-12-18
2645865Cushioning insole for shoes1953-07-21
2638690Article of footwear1953-05-19
2638601Article of footwear1953-05-19
2488382Pneumatic foot support1949-11-15
2177116Pneumatic foot supporter1939-10-24
0746338N/A1903-12-08