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FREDERICK L CRANFORD

Overview
  • Total Patents
    15
About

FREDERICK L CRANFORD has a total of 15 patent applications. Its first patent ever was published in 1907. It filed its patents most often in United States. Its main competitors in its focus markets civil engineering are KIM DONG SE, SHENZHEN JULIAN ANCHOR TECH CO LTD and JINAN RAILWAY VEHICLES GROUP CO LTD.

Patent filings in countries

World map showing FREDERICK L CRANFORDs patent filings in countries
# Country Total Patents
#1 United States 15

Patent filings per year

Chart showing FREDERICK L CRANFORDs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Civil engineering

Focus technologies

# Technology
#1 Foundations and excavations
#2 Shafts

Top inventors

# Name Total Patents
#1 Meem James C 15

Latest patents

Publication Filing date Title
US1572741A Tunnel and method of building and submerging
US1547432A Tunnel and method of building and submerging
US1547341A Method of building and laying tunnels
US1441698A Tunnel construction
US1350556A Tunnel-lining
US1338030A Tunnel and method of excavating
US1326364A Process and apparatus for filling in excavations.
US1282904A Sectional sheating.
US1246136A Caisson.
US1246135A Sectional sheathing.
US1246134A Tunnel-shield.
US1246133A Apparatus for sheathing the walls of and excavation.
US1018578A Method of tunnel construction.
US896064A Method of construction.
US884990A Method of construction.