Inventor
LETTER DAVID
US7 patents
Patents
7 patentsUS9709463B2Jul 18, 2017
Method and system for surface profile inspection of off-line industrial gas turbines and other power generation machinery
SIEMENS ENERGY INC14 citations82
US9778141B2Oct 3, 2017
Video inspection system with deformable, self-supporting deployment tether
SIEMENS ENERGY INC19 citations81
US10041371B1Aug 7, 2018
In-situ measurement of blade tip-to-shroud gap in turbine engine
SIEMENS ENERGY INC4 citations70
US10274718B2Apr 30, 2019
Single-axis inspection scope with anti-rotation extension and method for internal inspection of power generation machinery
SIEMENS ENERGY INC1 citations58
US10189045B2Jan 29, 2019
Blackbody material application system for a turbine
SIEMENS ENERGY INC0 citations48
US9948835B2Apr 17, 2018
Single-axis inspection scope with spherical camera and method for internal inspection of power generation machinery
SIEMENS ENERGY INC1 citations48
US10281712B2May 7, 2019
Single-axis inspection scope with bendable knuckle and method for internal inspection of power generation machinery
SIEMENS ENERGY INC0 citations37