Inventor

Duane Aaron Howell

Inventor

Davenport, IA, US

Overview

3→

Patents

1976–1999

Patent span

Performing operations

Primary field (CPC B)

Patents· 3 as inventor

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

B65Bprimary

B65BMachines, apparatus or devices for, or methods of, packaging articles or materials29%

B65DContainers for storage or transport of articles or materials, e.g. bags, barrels, bottles, boxes, cans, cartons, crates, drums, jars, tanks, hoppers, forwarding containers29%

E21DShafts14%

F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges14%

F41AFunctional features or details common to both smallarms and ordnance, e.g. cannons14%

PatentTitleYear

5,930,930'Gun locking mechanism'1999 4,009,778'Dual compartment package and method for making same'1977 3,992,854'Method and apparatus for making dual compartment package'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1977Patents assigned to KARTRIDG PAK CO (2)· patent assignee history

1976–1977Based in Davenport, IA, US· patent location history

1999Based in Wichita, KS, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
KARTRIDG PAK CO	2	1976–1977

Locations

Location	Patents	Span
Davenport, IA, US	2	1976–1977
Wichita, KS, US	1	1999