FRIESTEDT LUTHER P has a total of 15 patent applications. Its first patent ever was published in 1901. It filed its patents most often in United States. Its main competitors in its focus markets civil engineering are CHITIS WOLF, YAMADA KUNIMITSU and CG ENGINEERING & CONSULTING CO LTD.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 15 |
# | Industry | |
---|---|---|
#1 | Civil engineering |
# | Technology | |
---|---|---|
#1 | Foundations and excavations | |
#2 | Hydraulic engineering | |
#3 | Machines for making railways |
# | Name | Total Patents |
---|---|---|
#1 | Friestedt Luther P | 15 |
Publication | Filing date | Title |
---|---|---|
US932115A | Metallic railway-tie. | |
US834051A | Sheet-piling. | |
US832964A | Construction of buildings. | |
US871582A | Sheet-piling. | |
US762042A | Method of raising subterranean rivers. | |
US832371A | Ship channel or canal. | |
US756618A | Sheet-piling. | |
US738312A | Pile-driver buffer. | |
US735489A | Sheet-piling. | |
US739072A | Sheet-piling. | |
US734843A | Sheet-piling. | |
US730755A | Sheet-piling. | |
US733713A | Sheet-piling. | |
US734314A | Sheet-piling. | |
US707837A | Sheet-piling. |