Title:
Sheet metal duct
United States Patent 3185506
US Patent References:
/0831429.html
- - 0831429
/1516169.html
- - 1516169
End to side sheet metal fitting having an opening with slits in the side
- - 2874980
Sheet metal attachment means
- - 2950131
Sheet metal fittings
- - 2963783
/0831429.html
- - 0831429
/1516169.html
- - 1516169
End to side sheet metal fitting having an opening with slits in the side
- - 2874980
Sheet metal attachment means
- - 2950131
Sheet metal fittings
- - 2963783
Inventors:
Joseph, Szlashta
Publication Date:
05/25/1965
View Patent Images:
Export Citation:
Assignee:
Joseph, Szlashta
Primary Class:
Other Classes:
285/136.100, 285/325, 285/424, 285/189
International Classes:
F16L9/02; F23J13/04; F16L9/00; F23J13/00
US Patent References:
| 2965397 | Self-locking duct take-off |
Foreign References:
| CA620462A |