Ingenious Inventions: Revolution in the Tennis-World


Source: YouTube/Online Mix Video

Patent Information
Publication number: US3485398 A
Patent Title: Tennis ball pick-up and collecting machine
Publication date: 23 Dec 1969
Filing date: 2 Oct 1967
Priority date: 2 Oct 1967
Inventors: Offner Maximilian
Original Assignee: Offner Maximilian

US3485398

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