PL94323B2 - - Google Patents

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Publication number
PL94323B2
PL94323B2 PL179057A PL17905775A PL94323B2 PL 94323 B2 PL94323 B2 PL 94323B2 PL 179057 A PL179057 A PL 179057A PL 17905775 A PL17905775 A PL 17905775A PL 94323 B2 PL94323 B2 PL 94323B2
Authority
PL
Poland
Prior art keywords
closing element
ring
conical
seat
spherical
Prior art date
Application number
PL179057A
Other languages
English (en)
Polish (pl)
Other versions
PL94323B1 (index.php
Inventor
Ostaszewski Józef
Boron Mieczyslaw
Bilik Ryszard
Original Assignee
Instytut Górnictwa Naftowego i Gazownictwa
Filing date
Publication date
Application filed by Instytut Górnictwa Naftowego i Gazownictwa filed Critical Instytut Górnictwa Naftowego i Gazownictwa
Priority to PL179057A priority Critical patent/PL94323B2/pl
Publication of PL94323B1 publication Critical patent/PL94323B1/xx
Publication of PL94323B2 publication Critical patent/PL94323B2/pl

Links

PL179057A 1975-03-25 PL94323B2 (index.php)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL179057A PL94323B2 (index.php) 1975-03-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL179057A PL94323B2 (index.php) 1975-03-25

Publications (2)

Publication Number Publication Date
PL94323B1 PL94323B1 (index.php) 1977-07-30
PL94323B2 true PL94323B2 (index.php) 1977-07-31

Family

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