Tangible Media: Removable Storage of Image, Sound, Motion and Data
Tangible Media: Removable Storage of Image, Sound, Motion and Data
Tangible Media: Removable Storage of Image, Sound, Motion and Data
Chemistry
Didactor

Date:

late 1960s

Material:

Cellulose film

Dimensions:

35 mm

Company:

Didactics Corp.

Location:

Mansfield, Ohio
Teaching machine. US Patent 3,355,819 (Hannah and Hiatt 1967)
References
⌃  Back to citationHannah, Jack W. and Harrold E. Hiatt. 1967. Teaching machine. US Patent 3,355,819, filed Sep. 16, 1965, and issued Dec. 5, 1967.