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Inventor

Frank D. Defalco

Inventor
Worcester, MA, US

Overview

2→
Patents
1999
Patent span
Physics
Primary field (CPC G)

Patents· 2 as inventor

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

G01Cprimary
G01CMeasuring distances, levels or bearings25%
G01SRadio direction-finding25%
G09BEducational or demonstration appliances25%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests25%
PatentTitleYear
5,987,380'Hand-held GPS-mapping device'19995,902,347'Hand-held GPS-mapping device'1999

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1999Patents assigned to AMERICAN NAVIGATION SYSTEMS IN (1)· patent assignee history
1999Patents assigned to AMERICAN NAVIGATIONS SYSTEMS I (1)· patent assignee history
1999Based in Worcester, MA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
AMERICAN NAVIGATION SYSTEMS IN11999
AMERICAN NAVIGATIONS SYSTEMS I11999
Locations
LocationPatentsSpan
Worcester, Massachusetts, US21999