Patent
   D310840
Priority
Sep 02 1988
Filed
Sep 02 1988
Issued
Sep 25 1990
Expiry
Sep 25 2004
Assg.orig
Entity
unknown
4
7
n/a
The ornamental design for a door viewer, as shown.

FIG. 1 is a perspective view of a door viewer showing my new design;

FIG 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof; and

FIG. 4 is a side elevational view thereof.

Degnan, Donald E.

Patent Priority Assignee Title
D330382, Apr 10 1990 RUDOLPH-DESCO COMPANY, INC Panoramic door viewer
D390584, Apr 04 1997 Novelty interior security peephole cover
D881966, May 16 2018 Plasser & Theurer, Export von Bahnbaumaschinen, Gesellschaft m.b.H. Catadioptric reflector
D949946, Aug 23 2016 FUJIFILM Corporation Lens for camera
Patent Priority Assignee Title
3438540,
3973835, May 05 1975 RUDOLPH-DESCO CO INC Security viewing device
4050792, Mar 12 1975 Roger Ronny Jochen, Svensson Observation port assembly
4172636, Sep 26 1977 Nicon Co., Ltd. Door scope
4269474, Jan 31 1979 Wide-angle optical door viewer
4726670, Sep 12 1984 Security viewer
4730911, Jan 27 1986 Wide angle optical viewer
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Apr 19 1991DEGNAN, DONALD E DOOR SPY INC ,ASSIGNMENT OF ASSIGNORS INTEREST 0057360063 pdf
Jun 10 1991DEGNAN, DONALD E RUDOLPH-DESCO CO INC ,ASSIGNMENT OF ASSIGNORS INTEREST 0058660172 pdf
Aug 23 1994DEGNAN, DONALD E RUDOLPH-DESCO COMPANY, INC ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0071090725 pdf
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