IP Library › Granted Patent US 4,638,314
Granted Patent Utility
US 4,638,314 · App. 06/570,118

Meter transponder hybrid

Inventor: Franz Keller
Patented Case View Patent ↗
Granted: Jan 20, 1987 Filed: Jan 12, 1984
Inventor
Franz Keller
Assignee (at issue)
American Science and Engineering, Inc.

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Quick Facts
Patent No.
US 4,638,314
App. No.
06/570,118
Filed
1984-01-12
Granted
1987-01-20
Kind
A