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Inventor

Delmar D. Lewis

Inventor
Letts, IA, US

Overview

3→
Patents
1983–1985
Patent span
Human necessities
Primary field (CPC A)

Patents· 3 as inventor

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

A63Bprimary
A63BApparatus for physical training, gymnastics, swimming, climbing, or fencing20%
B23BTurning20%
E05BLocks20%
F16JPistons20%
Y10TTechnical subjects covered by former us classification20%
PatentTitleYear
4,556,222'Auxiliary sealing system for fluid mixers'19854,432,677'Cutter for cylindrical locks'19844,368,801'Column climbing device'1983

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1983–1985Patents assigned to LEWIS DELMAR D (3)· patent assignee history
1983–1984Based in Letts, IA, US· patent location history
1985Patents assigned to LEWIS DONALD E (1)· patent assignee history
1985Based in Muscatine, IA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
LEWIS DELMAR Dself31983–1985
LEWIS DONALD E11985
Locations
LocationPatentsSpan
Letts, IA, US21983–1984
Muscatine, IA, US11985