LexDanaLexDanabeta
Inventor

James W. Phelpstead

Inventor
Southampton, GB

Overview

5→
Patents
1977–1989
Patent span
Human necessities
Primary field (CPC A)

Patents· 5 as inventor

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

A24Dprimary
A24DCigars100%
PatentTitleYear
4,838,286'Smoking articles'19894,754,766'Tobacco smoke filters'19884,660,579'Tobacco smoke filters'19874,300,577'Tobacco-smoke filters'19814,062,368'Tobacco-smoke filters'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977Patents assigned to BROWN & WILLIAMSON TOBACCO CORP (1)· patent assignee history
1977–1989Based in Southampton, GB· patent location history
1981–1989Patents assigned to BRITISH AMERICAN TOBACCO CO (4)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BRITISH AMERICAN TOBACCO CO41981–1989
BROWN & WILLIAMSON TOBACCO CORP11977
Locations
LocationPatentsSpan
Southampton, GB51977–1989