|
US2069280A
|
|
Composite structural steel and reenforced concrete construction
|
|
US1707026A
|
|
Reenforced floor construction
|
|
US1702706A
|
|
Fireproof construction
|
|
US1765544A
|
|
Mixing machine
|
|
US1633682A
|
|
Concrete mixer
|
|
US1693941A
|
|
Building construction
|
|
US1494933A
|
|
Fishing reel
|
|
US1428561A
|
|
Metal bar of curved cross section
|
|
US1506089A
|
|
Concrete mixer and conveyer
|
|
US1339226A
|
|
Structural bar
|
|
US1450187A
|
|
Reenforced floor construction
|
|
US1417774A
|
|
Monolithic flat slab
|
|
US1553476A
|
|
Art of mixing concrete and transporting the same
|
|
US1391983A
|
|
Scaffold-bracket
|
|
CA166382A
|
|
Concrete construction
|
|
US1111974A
|
|
Concrete-mixer.
|
|
US993798A
|
|
Railway-tie.
|
|
US1134164A
|
|
Concrete building construction.
|
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CA300928A
|
|
Building construction
|
