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			 The ornamental design for a respiratory checking device, substantially as shown.  | 
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FIG. 1 is a front perspective illustration of the present invention;
FIG. 2 is a top elevational view of the present invention;
FIG. 3 is a front elevational view of the present invention;
FIG. 4 is a side elevational view as seen from the left side of FIG. 3;
FIG. 5 is a side elevational view as seen from the right side of FIG. 3.
FIG. 6 is a rear elevational view of the present invention; and
FIG. 7 is a bottom elevational view of the present invention.
| Patent | Priority | Assignee | Title | 
| D284697, | Oct 12 1983 | Briox Technologies, Inc. | Infant apnea detector | 
| Patent | Priority | Assignee | Title | 
| 3509771, | |||
| 3922525, | |||
| 173284, | |||
| FR23020703, | 
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc | 
| Sep 17 1980 | HORNE BARRY E | SPITAL MEDICAL SUPPLY, INC | ASSIGNMENT OF ASSIGNORS INTEREST | 003819 | /0644 | |
| Sep 29 1980 | Barry E., Horne | (assignment on the face of the patent) | / | |||
| Nov 05 1981 | SPITAL MEDICAL SUPPLY, INC , A MI CORP | HORNE, BARRY E | ASSIGNMENT OF ASSIGNORS INTEREST | 003932 | /0984 | 
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