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Inventor

John F. Aspinwall

Inventor
Purley, GB

Overview

2→
Patents
1981–1983
Patent span
Electricity
Primary field (CPC H)

Patents· 2 as inventor

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

H01Qprimary
H01QAntennas, i.e. radio aerials33%
H02JElectric power networks33%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests33%
PatentTitleYear
4,385,269'Battery charger'19834,282,528'Plural antennas having a sleeve dipole'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981Patents assigned to COMMUNICATIONS PATENTS LTD (1)· patent assignee history
1981–1983Based in Purley, GB· patent location history
1983Patents assigned to REDIFON TELECOMM (1)· patent assignee history
1983Patents assigned to THAMES TELEVISION (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
COMMUNICATIONS PATENTS LTD11981
REDIFON TELECOMM11983
THAMES TELEVISION11983
Locations
LocationPatentsSpan
Purley, GB21981–1983