Door structure for bomb shelter
United States Patent 3093098
US Patent References:
Combination outer doors for dwellings
- - 2381666
Hardware unit for ventilating doors
- - 2537896
Atom-bombproof shelter
- - 2704983
Air relief means for doors
- - 2798422
Doorway construction
- - 2823429
Combination outer doors for dwellings
- - 2381666
Hardware unit for ventilating doors
- - 2537896
Atom-bombproof shelter
- - 2704983
Air relief means for doors
- - 2798422
Doorway construction
- - 2823429
Inventors:
Rosenfeld, Morton M.
Publication Date:
06/11/1963
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Export Citation:
Assignee:
Rosenfeld, Morton M.
Primary Class:
Other Classes:
109/64, 454/902, 454/195, 52/169.600
International Classes:
E06B5/12; E06B5/18; E06B5/10
US Patent References:
| 2839157 | Sand or earth filter for shelters |
Foreign References:
| GB188614848A | ||||
| FR808939A |