Filter sheet support element
Kopf August 18, 1
U.S. patent number D328,789 [Application Number 07/487,180] was granted by the patent office on 1992-08-18 for filter sheet support element. Invention is credited to Henry B. Kopf.
| United States Patent | D328,789 |
| Kopf | August 18, 1992 |
Filter sheet support element
Claims
The ornamental design for a filter sheet support element, as shown and described.
| Inventors: | Kopf; Henry B. (Cary, NC) |
|---|---|
| Appl. No.: | 07/487,180 |
| Filed: | March 1, 1990 |
| Current U.S. Class: | D24/162 |
| Field of Search: | ;D24/162,164,169 ;210/321.61,321.86,321.87,323.1,340,231,321.75,486,487,493.1,493.2 |
References Cited [Referenced By]
U.S. Patent Documents
| 744761 | November 1903 | James |
| 802105 | October 1905 | Johnson et al. |
| 1138251 | May 1915 | Schaefer |
| 1282414 | December 1918 | Hagstrom |
| 1540251 | September 1925 | Buckley et al. |
| 2390628 | December 1945 | Van Winkle |
| 2473986 | September 1949 | Booth |
| 2590242 | March 1952 | Fusco |
| 3221883 | December 1965 | Linnstrom |
| 3471023 | October 1969 | Rosaen |
| 3520803 | July 1970 | Iaconelli |
| 3585131 | June 1971 | Esmond |
| 3659718 | May 1972 | Brociner et al. |
| 3966612 | June 1976 | Johansson |
| 3988242 | October 1976 | Kurita et al. |
| 4229304 | October 1980 | Fismer |
| 4235721 | November 1980 | Nakamura et al. |
| 4310416 | January 1982 | Tanaka et al. |
| 4411784 | October 1983 | Esmond |
| 4430218 | February 1984 | Peri et al. |
| 4540492 | September 1985 | Kessler |
| 4543187 | September 1985 | Steppacher |
| 4610789 | September 1986 | Barch |
| 4624784 | November 1986 | Lefebvre |
| 4735718 | May 1986 | Peters |
| 4750983 | June 1988 | Foster et al. |
| 4769140 | September 1988 | Van Dijk et al. |
| 4801381 | January 1989 | Niesen |
| 4867876 | September 1989 | Kopf |
| 4882050 | November 1989 | Kopf |
| 4956085 | September 1990 | Kopf |
| 369216 | Aug 1984 | EP | |||
| 2930986 | Feb 1980 | DE | |||
| 229603 | Jan 1985 | DD | |||
| 8600237 | Jan 1986 | WO | |||
| 1392030 | Apr 1975 | GB | |||
Other References
|
Prostak.TM. Bench Top Development System Lit No. SD200, Aug. 1986. . "Laboratory Ultra Filtration Products for Improved Biological Recovery", Lit. No. AB841, Oct. 1988. . "Shorten the Race to the Market with Millipore Pilot and Process Systems", Lit. No. SD100, Jan. 1988.. |
Primary Examiner: Reid; Stella
Attorney, Agent or Firm: Hultquist; Steven J.
Description
FIG. 1 is a perspective view of a filter sheet support element, showing my new design;
FIG. 2 is a top plan view thereof, the bottom plan view being identical thereto;
FIG. 3 is a right side elevational view thereof, the left side elevational view being identical thereto; and,
FIG. 4 is a front elevational view thereof, the rear elevational view being identical thereto.
* * * * *
uspto.report is an independent third-party trademark research tool that is not affiliated, endorsed, or sponsored by the United States Patent and Trademark Office (USPTO) or any other governmental organization. The information provided by uspto.report is based on publicly available data at the time of writing and is intended for informational purposes only.
While we strive to provide accurate and up-to-date information, we do not guarantee the accuracy, completeness, reliability, or suitability of the information displayed on this site. The use of this site is at your own risk. Any reliance you place on such information is therefore strictly at your own risk.
All official trademark data, including owner information, should be verified by visiting the official USPTO website at www.uspto.gov. This site is not intended to replace professional legal advice and should not be used as a substitute for consulting with a legal professional who is knowledgeable about trademark law.
| 