Pipe joints or couplings – Materials – Sheet
Reexamination Certificate
2007-03-27
2007-03-27
Hewitt, James M. (Department: 3679)
Pipe joints or couplings
Materials
Sheet
C285S405000, C138S109000, C138S155000, C138SDIG010
Reexamination Certificate
active
10705967
ABSTRACT:
A duct system comprising duct sections which are factory manufactured and field modifiable. The field modifiable duct system comprises fire resistant materials and is fire-rated. The duct sections when assembled create a continuous conduit that allows air to flow from a fresh air source to the required area of the building.
REFERENCES:
patent: 2183174 (1939-12-01), Smith
patent: 2226523 (1940-12-01), Peck
patent: 3198561 (1965-08-01), Witt
patent: 3630549 (1971-12-01), Grimm
patent: 3800846 (1974-04-01), Kurz
patent: 3811714 (1974-05-01), Pintard
patent: 3923326 (1975-12-01), Mez
patent: 4133566 (1979-01-01), Miller
patent: 4380188 (1983-04-01), Nichols
patent: 4509778 (1985-04-01), Arnoldt
patent: 4537430 (1985-08-01), Sullivan
patent: 4557297 (1985-12-01), Montana
patent: 4572553 (1986-02-01), Geldner
patent: 4662661 (1987-05-01), Arnoldt
patent: 4725083 (1988-02-01), Schauer
patent: 4765375 (1988-08-01), Nakajima
patent: 4804207 (1989-02-01), Berchem et al.
patent: 4836585 (1989-06-01), Schauer
patent: 4940264 (1990-07-01), Mez
patent: 5069484 (1991-12-01), McElroy
patent: 5103549 (1992-04-01), Meinig et al.
patent: 5129690 (1992-07-01), Meinig et al.
patent: 5133580 (1992-07-01), Meinig
patent: 5135270 (1992-08-01), Arnoldt et al.
patent: 5171184 (1992-12-01), Saucier et al.
patent: 5219403 (1993-06-01), Murphy
patent: 5378028 (1995-01-01), Issagholian-Havai et al.
patent: 5450879 (1995-09-01), Toben
patent: 5564758 (1996-10-01), Tiberio
patent: 5575131 (1996-11-01), Menchetti
patent: 5653482 (1997-08-01), Ficchi, Jr.
patent: 5673947 (1997-10-01), De Waal
patent: 5775414 (1998-07-01), Graham
patent: 5865478 (1999-02-01), Lin
patent: 6109665 (2000-08-01), Meinig
patent: 6148867 (2000-11-01), Matthews et al.
patent: 6213522 (2001-04-01), Jacobson et al.
patent: 6231704 (2001-05-01), Carpinetti
patent: 6412519 (2002-07-01), Goodhue
patent: 6460573 (2002-10-01), Fischer et al.
patent: 6471256 (2002-10-01), Fischer
patent: 6502716 (2003-01-01), Kolesar
patent: 6505864 (2003-01-01), Shuey
patent: 6547287 (2003-04-01), Shah et al.
patent: 6550823 (2003-04-01), Siegwart
patent: 6561553 (2003-05-01), Issagholian-Havai
patent: 6758502 (2004-07-01), Mattsson et al.
patent: 6848720 (2005-02-01), Carns et al.
patent: 2002/0121778 (2002-09-01), Tigerfeldt
patent: 2003/0006611 (2003-01-01), Shuey
patent: 2003/0160452 (2003-08-01), Mattson et al.
patent: 2 284 989 (1995-06-01), None
patent: 8-178404 (1996-07-01), None
Canadian Office Action, dated Aug. 2, 2006, Canadian Patent Application No. 2,450,977 (3 pages).
Dinesh Agarwal, P.C.
Hewitt James M.
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