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1916-01-14 |
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George T Chambers |
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1918-11-04 |
1921-07-12 |
William F Mcmonegal |
Shovel-tooth
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1925-02-14 |
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Taylor Wharton Iron & Steel |
Dipper tooth
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1929-12-16 |
1932-05-03 |
Wellman Engineering Company |
Dipper tooth structure
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1938-06-22 |
1941-09-23 |
Daniels Murtaugh Company |
Replaceable tooth for dippers
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1945-06-06 |
1947-09-23 |
Electric Steel Foundry |
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1958-04-28 |
1961-05-02 |
Thomas C Whisler |
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1959-01-06 |
1962-02-06 |
American Brake Shoe Co |
Keeper for an excavator tooth
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1961-06-22 |
1963-03-05 |
Esco Corp |
Ground-working tooth and method
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1964-06-01 |
1967-04-04 |
Thys Company |
Ripper tooth assembly
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1970-01-26 |
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Caterpillar Tractor Co |
High strength digging tooth
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1971-03-18 |
1972-10-05 |
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1971-06-21 |
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Caterpillar Tractor Co. |
Tooth adapter for a cutting edge
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1977-02-18 |
1978-09-15 |
Esco Corp |
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1978-06-16 |
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Caterpillar Tractor Co. |
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1980-04-28 |
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Esco Corporation |
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1988-08-09 |
Esco Corporation |
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1995-06-07 |
2000-03-07 |
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1995-12-11 |
1999-08-17 |
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1995-12-11 |
1998-01-20 |
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1995-12-14 |
1998-03-03 |
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1995-12-14 |
1999-04-20 |
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1995-12-14 |
1998-06-30 |
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1997-09-03 |
1999-06-08 |
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Grooved earth working tool
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1997-09-08 |
1999-12-21 |
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1998-09-28 |
1999-08-31 |
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1998-09-29 |
1999-10-12 |
Deere & Company |
Tillage sweep
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1999-06-14 |
2000-08-08 |
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Tillage sweep
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