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Patent
   D334171
Priority
Dec 31 1991
Filed
Dec 31 1991
Issued
Mar 23 1993
Expiry
Mar 23 2007
Inventors
McDonnal, …
Assg.orig
RO Associa…
Assg.curr
RO Associa…
Entity
unknown
Referenced by
9
References
7
Maint.:
n/a
The ornamental design for a dc to dc converter, as shown and described.

FIG. 1 is a front and lower right perspective view of a DC to DC converter showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side elevational view thereof, the right side elevational view thereof being a mirror image; and,

FIG. 4 is a bottom plan view thereof.
INVENTORS:

McDonnal, John E.

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
D356291, Oct 12 1992 TDK-Lambda Corporation DC stabilizing power supply
D356994, Oct 12 1992 TDK-Lambda Corporation DC stabilizing power supply
D361310, Oct 12 1992 TDK-Lambda Corporation Noise filter
D362839, Oct 12 1992 TDK-Lambda Corporation DC stabilizing power supply
D363268, Aug 30 1993 Unipower Corporation High density DC-DC converter
D365081, Aug 30 1993 UNIPOWER, LLC High density DC-DC converter
D369778, Oct 12 1992 TDK-Lambda Corporation Noise filter
D467869, Jun 19 2001 Kabushiki Kaisha Toshiba Portion of power converter
D502684, Nov 15 2002 NINTENDO CO , LTD Conversion adapter for game machine
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
3717835,
4758808, Aug 16 1983 TDK Corporation Impedance element mounted on a pc board
4918417, Jun 09 1988 Murata Manufacturing Co., Ltd. Inductor having parallel line electrodes
4949057, Jul 28 1988 Fujitsu Limited Distributed constant type delay line device and a manufacturing method thereof
5075821, Nov 05 1990 Astrodyne Corporation DC to DC converter apparatus
D287006, Jul 29 1983 Termiflex Corporation Housing for electrical components and the like
D297928, Feb 26 1985 VLT CORPORATION, ONE RIVERWALK PLACE, 700 NORTH ST MARY S SAN ANTONIO, TEXAS 78205, A TX CORP DC to DC power converter
ASSIGNMENT RECORDS    Assignment records on the USPTO
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Dec 20 1991MCDONNAL, JOHN E RO AssociatesASSIGNMENT OF ASSIGNORS INTEREST 0059610305 pdf
Dec 31 1991RO Associates(assignment on the face of the patent)
Dec 01 2006RO ASSOCIATES INCORPORATEDWells Fargo Bank, National AssociationPATENT AND TRADEMARK SECURITY AGREEMENT0187670956 pdf
Nov 30 2007RO ASSOCIATES INCORPORATEDGVEC RESOURCE IV INC SECURITY AGREEMENT0202180611 pdf
Dec 04 2007WELLS FARGO BANK, NATIONAL ASSOCIATION, ACTING WELLS FARGO BUSINESS CREDITRO ASSOCIATES INCORPORATEDRELEASE BY SECURED PARTY SEE DOCUMENT FOR DETAILS 0201960641 pdf
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