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Inventor

Ma Ming

Inventor
Tai To, N. T., HK

Overview

2→
Patents
1991–1995
Patent span
Human necessities
Primary field (CPC A)

Patents· 2 as inventor

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

A47Jprimary
A47JKitchen equipment50%
E21BEarth or rock drilling50%
PatentTitleYear
5,458,295'Dual chamber coffee mill'19955,002,124'Underground temperature and pressure measuring system for hot-exploiting oil well'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991Patents assigned to RES INST OF DRILLING & PRODUCT (1)· patent assignee history
1991Based in Liao Ning Province, CN· patent location history
1995Based in Tai To, N. T., HK· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
RES INST OF DRILLING & PRODUCT11991
Locations
LocationPatentsSpan
Tai To, N. T., HK11995
Liao Ning Province, CN11991