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Inventor

Andrew Walter McRae Thomson

Inventor
Gloucestershire, GB

Overview

7→
Patents
1999–2003
Patent span
Human necessities
Primary field (CPC A)

Patents· 7 as inventor

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

A47Lprimary
A47LDomestic washing or cleaning31%
B04CApparatus using free vortex flow, e.g. cyclones19%
B01DSeparation13%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%
F16KValves6%
LOC156%
LOC216%
Y10TTechnical subjects covered by former us classification6%
PatentTitleYear
6,572,078'Changover valve'20036,519,807'Cleaner head assembly for a vacuum cleaner'20036,461,508'Apparatus for separating dirt or dust from an airflow'2002D0439379'Vacuum cleaner'2001D0429776'Toy vacuum cleaner'20005,893,938'Dust separation apparatus'19995,858,038'Dust separation apparatus'1999

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1999–2002Patents assigned to NOTETRY LTD (5)· patent assignee history
1999Based in Malmesbury, GB· patent location history
2000–2002Based in Gloucestershire, GB· patent location history
2003Patents assigned to DYSON LTD (2)· patent assignee history
2003Based in Avening, GB· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NOTETRY LTD51999–2002
DYSON LTD22003
Locations
LocationPatentsSpan
Gloucestershire, GB32000–2002
Avening, GB22003
Malmesbury, GB21999