US884101A
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Cement-block machine.
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US880575A
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Molding-machine.
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US944272A
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Cement-block-molding machine.
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US826599A
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Machine for molding building-blocks.
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US817684A
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Machine for molding cement blocks.
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US817670A
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Method and machine for forming cement posts.
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US817661A
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Machine for molding building-blocks.
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US765251A
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Machine for molding building-blocks.
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US768679A
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Machine for molding building-blocks.
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US785755A
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Tamper.
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US765674A
|
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Lifter.
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US763942A
|
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Machine for molding blocks.
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US732884A
|
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Lifter for building-blocks.
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US732883A
|
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Roof.
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US718506A
|
|
Lifter for building-blocks.
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US721825A
|
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Building-block.
|
US718507A
|
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Machine for manufacturing building-blocks.
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