Patent
   D270625
Priority
Aug 24 1981
Filed
Aug 24 1981
Issued
Sep 20 1983
Expiry
Sep 20 1997
Assg.orig
Entity
unknown
5
2
n/a
The ornamental design for a unipolar chamber for ionization smoke detector, as shown.

FIG. 1 is a top plan view of a unipolar chamber for ionization smoke detector showing my new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is an elevational view thereof as seen from the right of FIG. 2;

FIG. 4 is an elevational view thereof as seen from the left of FIG. 2;

FIG. 5 is an elevational view thereof as seen from the side opposite that shown in FIG. 2.

The broken lines are shown for illustrative purposes only.

Hiltenbrand, Richard E.

Patent Priority Assignee Title
D274506, Feb 10 1982 Pittway Corporation Unipolar chamber for an ionization smoke detector
D277558, Jan 24 1983 DICON SAFETY PRODUCTS INTERNATIONAL INC ; DICON ELECTRONICS LIMITED; DICON INTERNATIONAL LIMITED AND DICON SYSTEMS INC Smoke detecting photoelectric sensing chamber
D284272, Aug 09 1984 Ionization chamber for a smoke detector
D297318, Aug 06 1986 DICON SAFETY PRODUCTS INTERNATIONAL INC ; DICON ELECTRONICS LIMITED; DICON INTERNATIONAL LIMITED AND DICON SYSTEMS INC Smoke detector chamber
D959996, Dec 06 2019 SHENZHEN GREEN GIANT ENERGY TECHNOLOGY DEVELOPMENT CO ,LTD Time manager
Patent Priority Assignee Title
4280052, Nov 09 1978 ELEKTROWATT AG, A CORP OF SWITZERLAND Multiple chamber ionization detector
D260378, Nov 02 1978 DICON SAFETY PRODUCTS INTERNATIONAL INC ; DICON ELECTRONICS LIMITED; DICON INTERNATIONAL LIMITED AND DICON SYSTEMS INC Ionization chamber for an electronic smoke detector
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Aug 17 1981HILTENBRAND, RICHARD E Pittway CorporationASSIGNMENT OF ASSIGNORS INTEREST 0039130396 pdf
Aug 24 1981Pittway Corporation(assignment on the face of the patent)
Jul 27 1992PITTWAY CORPORATION, A PA CORP , MERGED INTO AND WITHPittway CorporationMERGER SEE DOCUMENT FOR DETAILS EFFECTIVE ON 12 28 1989DE0062080358 pdf
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