Two-stage pump
Dudeck , et al. September 2, 1
U.S. patent number D285,447 [Application Number 06/557,943] was granted by the patent office on 1986-09-02 for two-stage pump. This patent grant is currently assigned to The Nash Engineering Company. Invention is credited to Carl G. Dudeck, Richard A. Lametto.
| United States Patent | D285,447 |
| Dudeck , et al. | September 2, 1986 |
Two-stage pump
Claims
The ornamental design for a two-stage pump, as shown.
| Inventors: | Dudeck; Carl G. (Newtown, CT), Lametto; Richard A. (West Redding, CT) |
|---|---|
| Assignee: | The Nash Engineering Company
(Norwalk, CT) |
| Appl. No.: | 06/557,943 |
| Filed: | December 5, 1983 |
| Current U.S. Class: | D15/7 |
| Field of Search: | ;D15/7,9 ;417/63,54 |
References Cited [Referenced By]
U.S. Patent Documents
| D110935 | August 1938 | Voorhees et al. |
| D202145 | August 1965 | Schroeder et al. |
| D229236 | November 1973 | Doolin |
| 4257747 | March 1981 | Goldman |
Other References
|
Nash.RTM. Multistage Vacuum Pumps, Bulletin No. 499-C, Copyright 1974 The Nash Engineering Company.. |
Primary Examiner: Burke; Wallace R.
Assistant Examiner: Wilder; Lynn
Description
FIG. 1 is a perspective view of a two-stage pump showing our new design;
FIG. 2 is a side elevational view thereof;
FIG. 3 is an elevational view of the opposite side thereof;
FIG. 4 is an end elevational view thereof;
FIG. 5 is an elevational view of the opposite end thereof;
FIG. 6 is a top plan view thereof; and
FIG. 7 is a bottom plan view thereof.
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