Extensible-retractile structure
United States Patent 3385397
US Patent References:
Collapsible rod
- - 2130993
Collapsible structure
- - 2269364
Collapsible structure
- - 2799368
Coilable tube device
- - 3144104
Continuously extensible and roll-up structure
- - 3252173
Collapsible rod
- - 2130993
Collapsible structure
- - 2269364
Collapsible structure
- - 2799368
Coilable tube device
- - 3144104
Continuously extensible and roll-up structure
- - 3252173
Inventors:
Robinsky, Eli I.
Publication Date:
05/28/1968
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Primary Class:
Other Classes:
52/108
International Classes:
E04H12/18; E06C1/52; E06C1/56; E04H12/00; E06C1/00
US Patent References:
| 3258800 | Continuously extensible and roll-up structure |
Foreign References:
| FR350790A |