Requests for Reexaminations Filed

   Notice under 37 CFR 1.11(c). The requests for reexamination listed
below are open to inspection by the general public in the indicated
Examining Groups. Copies of the requests and related papers may be
obtained by paying the fee therefor established in the Rules (37 CFR
1.19(a)).
   In the event correspondence to the patent owner is not received, this
notice will be considered to be constructive notice to the patent owner
and reexamination will proceed (37 CFR 1.248(a)(5) and 1.525(b)).

   Re. 33,751, Reexam. No. 90/003,908, Aug. 4, 1995, Cl. 175/061, SYSTEM
AND METHOD FOR CONTROLLED DIRECTIONAL DRILLING, Bela Geczy, et. al.,
Owner of Record: Halliburton Co., Duncan, Okla.,  Attorney or Agent:
William E. Shull, Halliburton Co., Houston, Tex., Ex. Gp.: 3506,
Requester: Charles W. Fallow, Shoemaker & Mattare, Arlington, Va.

   4,213,121, Reexam. No. 90/003,902, July 14, 1995, Cl. 340/384.6,
CHIME TONE AUDIO SYSTEM UTILIZING A PIEZOELECTRIC TRANSDUCER, Richard L.
Learn, Owner of Record: Emhardt Industries, Inc., Indianapolis, Ind.,
Attorney or Agent: Robert F. Meyer, Speedway, Ind., Ex. Gp.: 2608,
Requester: Floyd Bell Associates, c/o Frank H. Foster, Reynoldsburg, Ohio

   4,803,445, Reexam. No. 90/003,909, Aug. 4, 1995, Cl. 331/177R,
VARIABLE FREQUENCY OSCILLATOR, Richard Yamasaki, Owner of Record:
Silicon Systems, Tuskin, Calif.,  Attorney or Agent: Gary A. Hecker,
Hecker & Harriman, Los Angeles, Calif., Ex. Gp.: 2502, Requester: Exar
Corp., c/o David M. Simon, Spensley, Horn, Jubas & Lubitz, Los Angeles,
Calif.

   5,032,042, Reexam. No. 90/003,910, Aug. 4, 1995, Cl. 405/258, METHOD
AND APPARATUS FOR ELIMINATING NON-NATURALLY OCCURING SUBSURFACE, LIQUID
TOXIC CONTAMINANTS FROM SOIL, John R. Schuring, et. al., Owner of
Record: New Jersey Institute of Technology, Newark, N.J.,  Attorney or
Agent: David A. Jackson, Klauber & Jackson, Hackensack, N.J., Ex. Gp.:
3506, Requester: Owner

   5,154,138, Reexam. No. 90/003,905, July 6, 1995, Cl. 119/72.5,
WATERING NIPPLE, Shahid A. Siddiqui, et. al., Owner of Record: CTB,
Inc., North-Milford, Ind.,  Attorney or Agent: Trexler, Bushnell,
Giangiorgi & Blackstone, Chicago, Ill., Ex. Gp.: 3303, Requester: Owner

   5,209,728, Reexam. No. 90/003,907, July 31, 1995, Cl. 604/096, LOW
PROFILE, HIGH-PERFORMANCE INTERVENTIONAL CATHETERS, Jeff Kraus, et. al.,
Owner of Record: Danforth Biomedical, Inc., Menlo Park, Calif.,
Attorney or Agent: Richard L. Hughes, Townsend & Townsend, Khourie &
Crew, San Francisco, Calif., Ex. Gp.: 3306, Requester: Dag H. Johansen,
Blakely Sokoloff Taylor & Zafman, Los Angeles, Calif.

   5,355,808, Reexam. No. 90/003,906, July 18, 1995, Cl. 105/377.01,
BATTENLESS RAILCAR HATCH COVER ASSEMBLY, Stephen J. Early, Owner of
Record: Aero Transportation Products, Independence, Mo.,  Attorney or
Agent: Taylor J. Ross, Kokjer Kircher Bowman & Johnson, Kansas City,
Mo., Ex. Gp.: 3103, Requester: Thomas K. Stine, Wallenstein & Wagner,
Chicago, Ill.

   5,364,759, Reexam. No. 90/003,901, July 21, 1995, Cl. 435/006, DNA
TYPING WITH SHORT TANDEM REPEAT POLYMORPHISMS AND IDENTIFICATION OF
POLYMORPHIC SHORT TANDEM REPEATS, Charles T. Caskey, et. al., Owner of
Record: Baylor College of Medicine, Houston, Tex.,  Attorney or Agent:
None, Ex. Gp.: 1807, Requester: Gerald H. Bencen, Saliwanchik &
Saliwanchik, Gainesville, Fla.

   5,372,188, Reexam. No. 90/003,911, Aug. 9, 1995, Cl. 165/110, HEAT
EXCHANGER FOR A REFRIGERANT SYSTEM, Jack C. Dudley, et. al., Owner of
Record: Modine Manufacturing Co., Racine, Wis.,  Attorney or Agent: Wood
Phillips Van Santen Hoffman & Ertl, Chicago, Ill., Ex. Gp.: 3407,
Requester: Armstrong Westerman Hattori McLeland & Naughton, Wash., D.C.

   5,372,250, Reexam. No. 90/003,903, July 17, 1995, Cl. 206/45.31,
LEVEL AND CASE PACKAGE, Robert A Johnson, Owner of Record: Johnson Level
& Tool Mfg., Co., Inc., Mequon, Wis.,  Attorney or Agent: Andrew S.
McConnell, Andrus Scaeles Starke & Sawall, Milwaukee, Wis., Ex. Gp.:
3208, Requester: Owner

   5,387,950, Reexam. No. 90/003,904, July 17, 1995, Cl. 351/178,
PRESCRIPTION EYEWEAR MADE FROM NON-PRESCRIPTION LENS SHIELD MATERIAL,
Alfred Weltman, Owner of Record: Inventor,  Attorney or Agent: Daniel R.
Kimbell, Drucker & Sommers, Beverly Hills, Calif., Ex. Gp.: 2516,
Requester: Owner