Inventor

John Marquez

Inventor
Fort Worth, TX, US

Overview

2→
Patents
2010–2020
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 2 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

E21Bprimary
E21BEarth or rock drilling20%
F04BPositive-displacement machines for liquids20%
F05BIndexing scheme relating to wind, spring, weight, inertia or like motors, to machines or engines for liquids covered by subclasses f03b, f03d and f03g20%
G01RMeasuring electric variables20%
H04NPictorial communication, e.g. television20%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2010Patents assigned to DELTA DESIGN INC (1)· patent assignee history
2010Based in San Diego, CA, US· patent location history
2020Patents assigned to SPM FLOW CONTROL INC (1)· patent assignee history
2020Based in Fort Worth, TX, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
DELTA DESIGN INC12010
SPM FLOW CONTROL INC12020
Locations
LocationPatentsSpan
Fort Worth, Texas, US12020
San Diego, California, US12010