Door frame and roll-up door mechanism for air locks
United States Patent 3006352
US Patent References:
/1302182.html
- - 1302182
Building with air supported roof and method of constructing the same
- - 2355248
Vertically sliding flexible door
- - 2513152
Blind construction
- - 2631661
Portable building construction
- - 2827138
/1302182.html
- - 1302182
Building with air supported roof and method of constructing the same
- - 2355248
Vertically sliding flexible door
- - 2513152
Blind construction
- - 2631661
Portable building construction
- - 2827138
Inventors:
Frank, Hozak Robert
Publication Date:
10/31/1961
View Patent Images:
Export Citation:
Assignee:
CID AIR STRUCTURES COMPANY
Primary Class:
Other Classes:
160/237, 160/310, 49/68, 160/264
International Classes:
E04H15/22; E04H15/20
US Patent References:
| 2914776 | Clamp |