John J. Pickering — 3 Patents at Btr Group

John J. Pickering has been granted 3 US patents while listed as an inventor at Btr Group. The first was granted in 1984 and the most recent in November 1989. John J. Pickering ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list John J. Pickering in Belper, RI, GB.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
4881511	Crankcase ventilator	—	1989-11-21
4821513	Automobile exhaust gas cleaner	—	1989-04-18
4442053	Method of and apparatus for repairing a leak in a pipe or pipeline	Ian B. Woodhouse, Araspillai N. Ganendran	1984-04-10

John J. Pickering — 3 Patents

Issued Patents All Time

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