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PRATT DAVID W

Overview
  • Total Patents
    14
About

PRATT DAVID W has a total of 14 patent applications. Its first patent ever was published in 2000. It filed its patents most often in United States, Canada and EPO (European Patent Office). Its main competitors in its focus markets measurement, civil engineering and mechanical elements are GENESIS UK LTD, GEOSERVICES EQUIPEMENTS SAS and DYBDAHL BJOERN.

Patent filings per year

Chart showing PRATT DAVID Ws patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Pratt David W 14

Latest patents

Publication Filing date Title
US6979033B2 Dual function bailer
US6966587B1 Self-emptying bailer
US7255380B1 Bottom-emptying device for tapered bailer
US6989092B1 Bailer having built-in filter
CA2405257A1 Air tight bailer system
WO03078968A1 Low flow bailer
CA2357100A1 Anti-wobbling bailer with high speed insertion
CA2356448A1 Bailer having leak-inhibiting cushioned seal
DE10124901A1 Valve assembly for admitting liquid fluid into hollow interior of bailer, e.g. used for taking liquid sample in laboratory tests
EP1203140A1 Anti-wobbling bailer with high speed insertion