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An ornamental design for an ionization chamber for an electronic smoke detector. |
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FIG. 1 is an isometric view of the ionization chamber.
FIG. 2 is a bottom view of the ionization chamber.
FIG. 3 is a top view of the ionization chamber.
FIG. 4 is an end view of the ionization chamber.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Nov 02 1978 | Isotec Industries Limited | (assignment on the face of the patent) | / | |||
| Aug 17 1990 | Isotec Industries Limited | ROYAL BANK OF CANADA, THE | SECURITY INTEREST SEE DOCUMENT FOR DETAILS | 005485 | /0085 | |
| Nov 01 1994 | Disys Corporation | DICON SAFETY PRODUCTS INTERNATIONAL INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 007434 | /0280 | |
| Nov 01 1994 | Disys Corporation | DICON ELECTRONICS LIMITED | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 007434 | /0280 | |
| Nov 01 1994 | Disys Corporation | DICON INTERNATIONAL LIMITED AND DICON SYSTEMS INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 007434 | /0280 |
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