Screw anchor
Schavilje , et al. February 2, 1
U.S. patent number D262,864 [Application Number 06/070,570] was granted by the patent office on 1982-02-02 for screw anchor. This patent grant is currently assigned to Illinois Tool Works Inc.. Invention is credited to David C. Boyer, John N. Schavilje.
| United States Patent | D262,864 |
| Schavilje , et al. | February 2, 1982 |
Screw anchor
Claims
The ornamental design for a screw anchor, as shown.
| Inventors: | Schavilje; John N. (Mt. Prospect, IL), Boyer; David C. (Chicago, IL) |
|---|---|
| Assignee: | Illinois Tool Works Inc.
(Chicago, IL) |
| Appl. No.: | 06/070,570 |
| Filed: | October 9, 1979 |
| Current U.S. Class: | D8/385 |
| Current International Class: | D0808 |
| Field of Search: | ;D8/382,385,386 ;411/44,57,59,63-65,71 |
References Cited [Referenced By]
U.S. Patent Documents
| 1476837 | December 1923 | Pleister et al. |
| 3803973 | April 1974 | Rapata |
| 3869959 | March 1975 | Moen |
| 2436001 | Oct 1975 | DE | |||
| 819041 | Jun 1937 | FR | |||
| 140848 | Sep 1930 | CH | |||
Attorney, Agent or Firm: Halvorsen; J. R. Buckman; T. W.
Description
FIG. 1 is a top perspective view of a screw anchor showing our new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a side elevational view thereof;
FIG. 4 is a bottom plan view thereof.
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