| US Patent: 555,699 
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| Harrow | 
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| Patent Dates: |  
| Applied: | Dec. 03, 1892 |  
| Granted: | Mar. 03, 1896 |  USPTO (New site tip)
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                        Jeff Joslin
 Vintage Machinery entry for Hench & Dromgold Co.
 
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| Description: |  | The assignee was set up to establish a cartel of harrow makers; they purchased harrow patent rights from numerous makers of harrows and then licensed them back with a proviso that the prices be fixed according to a schedule provided by the National Harrow Co. Not surprisingly, they ran into considerable legal difficulty—including no less than four lawsuits filed by National Harrow Co. against Hench & Dromgold—and they consistently were found to be an illegal restraint of trade. The National Harrow Company then reorganized as a different company, incorporated under the laws of a different state, and changed their licensing terms. It appears that this new incarnation of National Harrow Company avoided legal sanctions, but it was not a business success. |  |