DOUGLAS DYNAMICS INC has a total of 14 patent applications. Its first patent ever was published in 1979. It filed its patents most often in United States and Canada. Its main competitors in its focus markets civil engineering, machines and transport are TYMCO INC, SNO WAY INT INC and MAINE STEEL PRODUCTS COMPANY.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 11 | |
#2 | Canada | 3 |
# | Industry | |
---|---|---|
#1 | Civil engineering | |
#2 | Machines | |
#3 | Transport | |
#4 | Mechanical elements | |
#5 | Machine tools | |
#6 | Agriculture |
# | Technology | |
---|---|---|
#1 | Street cleaning | |
#2 | Unspecified technologies | |
#3 | Unspecified technologies | |
#4 | Vehicle signalling and lighting | |
#5 | Mechanical control devices | |
#6 | Dredging | |
#7 | Planting | |
#8 | Construction of roads | |
#9 | Load transportation vehicles | |
#10 | Veneer production |
# | Name | Total Patents |
---|---|---|
#1 | Watson Gary E | 8 |
#2 | Simi Edward A | 6 |
#3 | Doornek James R | 5 |
#4 | Miller Richard R | 3 |
#5 | Fechter Thomas P | 2 |
#6 | Pieper James C | 1 |
#7 | Barker Chad T | 1 |
#8 | Klug Steven L | 1 |
#9 | Livingston Edwin Earl | 1 |
#10 | Radomski Steven P | 1 |
Publication | Filing date | Title |
---|---|---|
US5501405A | Dispenser apparatus for spreading particulate material | |
US5353530A | Quick mounting snow plow assembly | |
CA2075087A1 | Cargo handling apparatus | |
US5420480A | Automatic headlamp switching system | |
US5125174A | Removable snowflow with a pivotable lift stand | |
US4999935A | Hydraulic system and apparatus for use with vehicle accessory units | |
US4481988A | Log splitter | |
US4304056A | Snow plow mounting assembly | |
US4304057A | Snow plow assembly including linear actuator | |
US4280062A | Auxiliary light wiring harness | |
US4206602A | Single lever hydraulic system control mechanism |