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(en)
|
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1897-06-08 |
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Combination paving-block and system of paving |
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1877-09-18 |
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Improvement in concrete-block pavements |
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(en)
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1877-05-29 |
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Improvement in pavements |
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1893-12-19 |
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Brick-mold |
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1886-07-20 |
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pro-moll |
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1889-11-26 |
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Brick |
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1892-03-15 |
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Tool for cutting and dressing stone |
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1874-04-14 |
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Improvement in artificial-stone pavements |
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1885-01-13 |
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Terra-cotta pavement |
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1913-02-20 |
1914-02-10 |
Frank Aaronson |
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1916-10-09 |
1918-07-16 |
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1918-03-15 |
1918-12-10 |
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1920-07-01 |
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Building construction
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1922-12-26 |
1925-05-19 |
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1923-03-26 |
1926-02-16 |
Dale Richard |
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1923-04-19 |
1925-04-21 |
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1930-01-06 |
1933-01-03 |
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Building unit and method of making the same
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1930-10-02 |
1932-08-16 |
W A Riddell Company |
Method of making artificial stone brick
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1936-10-21 |
1939-03-21 |
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Building block
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1936-11-06 |
1940-06-11 |
Siemens Ag |
Telephone system
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1939-03-13 |
1940-10-29 |
Chicago Retort & Fire Brick Co |
Firebrick and method of making same
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1940-01-08 |
1943-05-11 |
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1940-07-02 |
1943-03-09 |
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1949-05-07 |
1956-05-15 |
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1950-02-21 |
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1950-11-24 |
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