TREA

Filter unit

Follow

Information

  • Patent Grant
  • D282767
  • Patent Number
    D282,767
  • Date Filed
    Tuesday, April 6, 1982
    42 years ago
  • Date Issued
    Tuesday, February 25, 1986
    38 years ago
  • US Classifications
    Field of Search
    • US
    • D23 149
    • D23 150
    • D23 110
    • D23 117
    • 055 467
    • 055 471
    • 055 473
    • 055 352
    • 055 354
    • 239 60
    • D26 75
    • D26 76
    • D26 78
    • Term of Grant
      14Years
Information
Abstract
Description
Claims
  • The ornamental design for a filter unit, as shown.
US Referenced Citations (17)
Number Name Date Kind
D147357 Watkins Aug 1947
D204722 Jenner May 1966
D238296 Trimarchi Dec 1975
D248869 Risher Aug 1978
D258686 Johnson Mar 1981
2763139 Callan et al. Sep 1956
2887567 Dameral May 1959
3596442 Neumann Aug 1971
3745750 Arff Jul 1973
3861894 Marsh Jan 1975
3954427 Jenn May 1976
4011067 Carey, Jr. Mar 1977
4226715 Niederer et al. Oct 1980
4277255 Apelgren Jul 1981
4301095 Mettler et al. Nov 1981
4370155 Armbruster Jan 1983
4378980 Long Apr 1983
Foreign Referenced Citations (3)
Number Date Country
2717613 Nov 1977 DEX
939098 Jun 1982 DEX
2800703 Jul 1978 SUX
Non-Patent Literature Citations (4)
Entry
Modufil.TM. Sales Brochure No. 107-10/82 (Oct. 1982) prepared by Assignee, ppm, Inc., Knoxville, TN.
Modufil.TM. Sales Brochure No. 112-2/83 (Feb. 1983) prepared by Assignee, ppm, Inc., Knoxville, TN.
Modufil.TM. Sales Brochure No. 113-3/83 (Mar. 1983) prepared by Assignee, ppm, Inc., Knoxville, TN.
Sales Brochure, Northern Air Corporation, "Modular Air Filtration Systems Model AR-2000" (exact date unknown).