For the Inventor, By the Inventor

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London, United Kingdom

Drexel Equipment Limited

USPTO Granted Patents = 1

Forward Citations = 2

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1 inventor (with patents filed for the assignee):

Richard Alvin Armell (1 out of 11 patents)

1 patent: Sort by Forward Citations

1. 4438938 - Seal for incorporation in high pressure leak testing tool (1984-03-27),

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USPTO Data Jan 1 1976 - Jan 13 2026

1 Patents

#1,552 in London

#9,680 in United Kingdom

London, United Kingdom

Drexel Equipment Limited

Forward Citations = 2

1 inventor:

Richard Alvin Armell (1 out of 11 patents)

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