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on 07 Aug 2020
Howell Instruments, Inc.
72094134 · 01 Apr 1960
25 Oct 2030
026
Apparatus for Measuring and/or Indicating Rotational Speed or Frequenc...
on 07 Aug 2020
Howell Instruments, Inc.
72094135 · 01 Apr 1960
25 Oct 2030
026
Apparatus for Measuring and/or Indicating Temperatures,Apparatus for M...
on 27 Apr 2019
Howell Instruments, Inc.
77796356 · 04 Aug 2009
25 Mar 2030
009
Tachometer testers,TACHOMETER CAL,TACHOMETER CAL,Tachometer testers
on 09 Feb 2019
HOWELL INSTRUMENTS, INC.
73748150 · 24 Aug 1988
18 Jul 2029
009
ELECTRICAL APPARATUS, NAMELY, APPARATUS FOR TRIMMING, TESTING, AND/OR ...
on 02 Feb 2017
Howell Instruments, Inc.
75040020 · 04 Jan 1996
18 Feb 2027
009
turbine engine performance analyzer,turbine engine performance analyze...
on 31 Jan 2017
Howell Instruments, Inc.
74705471 · 19 Jul 1995
24 Jun 2027
009
turbine engine performance analyzer,turbine engine performance analyze...
on 20 Nov 2015
HOWELL INSTRUMENTS, INC.
71677379 · 29 Nov 1954
01 Dec 2025
026
DEVICES FOR TESTING HEAT SENSING UNITS,AND SEPT. 15, 1952, AS TO "JETC...
on 20 Nov 2015
HOWELL INSTRUMENTS, INC.
71677380 · 29 Nov 1954
01 Dec 2025
026
DEVICES FOR TESTING HEAT SENSING UNITS
on 16 Mar 2020
HOWELL INSTRUMENTS, INC.
72008132 · 11 May 1956
026
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