Four-phase power supply helical antenna

Details Four-phase power supply helical antenna Four-phase power supply helical antenna

2001-12-21

2003-07-15

Zarfas, Louis S. (Department: 2914)

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

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Design Patent

active

D0477311

CLAIM:
The ornamental design for a four-phase power supply helical antenna, as shown.

REFERENCES:
patent: 3019438 (1962-01-01), Pan
patent: 3083364 (1963-03-01), Scheldorf
patent: 3252161 (1966-05-01), Gottwald et al.
patent: 5721558 (1998-02-01), Holemans
patent: 6005521 (1999-12-01), Suguro et al.
patent: 6075501 (2000-06-01), Kuramoto et al.
patent: 6150981 (2000-11-01), Suguro et al.
patent: 6421029 (2002-07-01), Tanabe

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