Inventor

Frederick H. Stilwell

Inventor

West Grove, PA, US

Overview

1997–2008

Patent span

Fixed constructions

Primary field (CPC E)

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

E05Bprimary

E05BLocks17%

E05CBolts or fastening devices for wings, specially for doors or windows17%

F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges17%

LOC0817%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests17%

Y10TTechnical subjects covered by former us classification17%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1997Patents assigned to EMHART INC (1)· patent assignee history

1997Based in Fort Wayne, IN, US· patent location history

2006–2008Patents assigned to SOUTHCO (2)· patent assignee history

2006–2008Based in West Grove, PA, US· patent location history

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SOUTHCO	2	2006–2008
EMHART INC	1	1997

Locations

Location	Patents	Span
West Grove, Pennsylvania, US	2	2006–2008
Fort Wayne, IN, US	1	1997