CHAPMAN MATTHEW T has a total of 13 patent applications. Its first patent ever was published in 1894. It filed its patents most often in United States and Canada. Its main competitors in its focus markets civil engineering, machines and engines, pumps and turbines are LAYNE, COOK TESTING CO and BAKER CASING SHOE COMPANY.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 12 | |
#2 | Canada | 1 |
# | Industry | |
---|---|---|
#1 | Civil engineering | |
#2 | Machines | |
#3 | Engines, pumps and turbines | |
#4 | Mechanical elements |
# | Technology | |
---|---|---|
#1 | Earth drilling | |
#2 | Unspecified technologies | |
#3 | Non-positive-displacement pumps | |
#4 | Gearing | |
#5 | Pumps | |
#6 | Unspecified technologies |
# | Name | Total Patents |
---|---|---|
#1 | Chapman Matthew T | 12 |
#2 | Bodinson Lars William | 1 |
#3 | Chapman Mark C | 1 |
Publication | Filing date | Title |
---|---|---|
CA170259A | Pump | |
US1291407A | Rotary deep-well pump. | |
US1264156A | Well-sinking apparatus. | |
US1277381A | Rotary pump. | |
US1302899A | Pumping machinery. | |
US1264155A | Well-sinking apparatus. | |
US833201A | Well-sinking apparatus. | |
US810910A | Well-sinking apparatus. | |
US769728A | Well-sinking apparatus. | |
US769727A | Well-sinking apparatus. | |
US833200A | Well-sinking apparatus. | |
US775417A | Well-sinking apparatus. | |
US677438A | Pumping apparatus. |