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"BOLLFRASS, CHARLES A"
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"BOLLFRASS, CHARLES A"
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Interstitially Insulated Pipes and Connection Technologies
by
FLETCHER LEROY S
,
BOLLFRASS CHARLES A
,
MAROTTA EGIDIO E
Year of Publication
31.12.2009
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Systems and methods for allowing underwater escape from a submarine
by
Van Acker, Jr, Henry
,
Bollfrass
,
Charles A
Year of Publication
09.08.2005
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Systems and methods for allowing underwater escape from a submarine
by
BOLLFRASS CHARLES A
,
VAN ACKER, JR. HENRY
Year of Publication
09.08.2005
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Method and apparatus for forming a ventable seal
by
CHELETTE; K. DARREL
,
BOLLFRASS
;
CHARLES A
Year of Publication
09.07.1991
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METHOD AND APPARATUS FOR FORMING A VENTABLE SEAL
by
BOLLFRASS
,
CHARLES A
,
CHELETTE, KENNETH D
Year of Publication
02.07.1991
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Tubular coupling with ventable seal
by
CHELETTE; K. DARREL
,
BOLLFRASS
;
CHARLES A
Year of Publication
16.01.1990
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THREADED COUPLING COMPRISING A VENTABLE SEAL
by
BOLLFRASS
,
CHARLES A
,
CHELETTE, K. DARREL
Year of Publication
03.01.1990
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THREADED PIPE CONNECTION
by
BOLLFRASS
,
CHARLES A
,
CHELETTE, KENNETH D
Year of Publication
18.07.1989
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METHOD AND APPARATUS FOR FORMING A VENTABLE SEAL
by
CHARLES A
.
BOLLFRASS
,
K. DARREL CHELETTE
Year of Publication
24.09.1987
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Threaded pipe connection
by
CHELETTE; KENNETH D
,
BOLLFRASS
;
CHARLES A
Year of Publication
13.05.1986
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METHOD AND APPARATUS FOR FORMING A VENTABLE SEAL
by
BOLLFRASS
,
CHARLES A
,
CHELETTE, K. DARREL
Year of Publication
10.07.1985
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Threaded coupling comprising a ventable seal
by
BOLLFRASS
,
CHARLES A
,
CHELETTE, K. DARREL
Year of Publication
05.12.1984
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METHOD AND APPARATUS FOR FORMING A VENTABLE SEAL
by
CHARLES A
.
BOLLFRASS
,
K. DARREL CHELETTE
Year of Publication
01.11.1984
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TREATING, INCLUDING INDUCTION HEATING OF WELL PIPE CONNECTIONS
by
BOLLFRASS
,
CHARLES A
,
LEWIS, GEORGE E
Year of Publication
11.08.1981
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VERFAHREN UND VORRICHTUNG ZUR BEHANDLUNG UND INDUKTIONSERWAERMUNG VON BOHRLOCHROHRVERBINDUNGEN
by
A
.
BOLLFRASS
,
CHARLES
,
E. LEWIS,GEORGE
Year of Publication
19.04.1979
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Treating, including induction heating of well pipe connections
by
BOLLFRASS
;
CHARLES A
,
LEWIS; GEORGE E
Year of Publication
09.01.1979
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Elastomeric guard seal for tubular connections
by
BOLLFRASS
;
CHARLES A
,
LANDRIAULT; L. STEVEN
,
ORTLOFF; DONALD J
Year of Publication
29.05.1990
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Threaded connector
by
BOLLFRASS
;
CHARLES A
,
MCDONALD; PATRICK E
,
LANDRIAULT; LEONARD S
Year of Publication
15.02.1983
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PROCEDE ET APPAREIL DE TRAITEMENT, Y COMPRIS DE CHAUFFAGE PAR INDUCTION, DE RACCORDS DE TUBES OU DE TIGES POUR PUITS
by
GEORGE E. LEWIS ET
CHARLES A
.
BOLLFRASS
Year of Publication
20.07.1979
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DEFLECTABLE LIP SEALING CONNECTION HAVING SPOILER FEATURE
by
RAYMOND E. LATHAM
,
CHARLES A
.
BOLLFRASS
,
ROBERT T. BROWN
Year of Publication
29.04.1969
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