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Inventor

Cheng-Wen Lai

Inventor
Chiayi County, TW

Overview

4→
Patents
1996–1999
Patent span
General tagging of new technological developments
Primary field (CPC Y)

Patents· 4 as inventor

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

E05Bprimary
E05BLocks40%
Y10TTechnical subjects covered by former us classification40%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests20%
PatentTitleYear
5,927,777'Lock set with improved spindle construction'19995,788,296'Lock set with improved spindle construction'19985,666,833'Reinforcing apparatus for a lever handle of a door lock'19975,562,317'Inner handle assembly of cylinder lock'1996

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1996–1999Patents assigned to TONG LUNG METAL IND CO LTD (4)· patent assignee history
1996–1999Based in Chiayi County, TW· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TONG LUNG METAL IND CO LTD41996–1999
Locations
LocationPatentsSpan
Chiayi County, TW41996–1999