US3797952A
(en )
1974-03-19
Roadway transition for expansion joints on road bridges etc.
EP0203043A2
(en )
1986-11-26
Improved transportable structure, apt to build up houses or other dwellings
US3902325A
(en )
1975-09-02
Shield structure for the face support in mines
US3842966A
(en )
1974-10-22
Travelling mine roof support with scraper conveyor for use with mechanical mining apparatus
US3324664A
(en )
1967-06-13
Resilient biasing device for mine roof support props
PL70975B1
(en:Method )
1974-04-30
US3800546A
(en )
1974-04-02
Mine roof support frames
US3782673A
(en )
1974-01-01
Connecting means between a support cap and a prop head
CS210315B1
(cs )
1982-01-29
Konzola pro lešení, zejména k podepírání bednění stěn
PL90941B1
(en:Method )
1977-02-28
NO165120B
(no )
1990-09-17
Fasadevegg.
US2910282A
(en )
1959-10-27
Mine roof support devices
US2749713A
(en )
1956-06-12
Supporting frames
GB2237318A
(en )
1991-05-01
A mine roof support
US2650475A
(en )
1953-09-01
Mine supporting structure
CN113586098A
(zh )
2021-11-02
可拆卸连接的支护设备
NO131094B
(en:Method )
1974-12-23
PL170966B1
(en )
1997-02-28
Roof supporting arrangement for crossing of underground mine galleries
US4573828A
(en )
1986-03-04
Roof support suitable for use in mines
US3548601A
(en )
1970-12-22
Mine roof supports
US3762172A
(en )
1973-10-02
Mine roof support bar assemblies
US4449859A
(en )
1984-05-22
Mineral mining installation
PL69517B1
(en:Method )
1973-04-30
PL121452B4
(en )
1982-05-31
Roof bar bracket for an arch-type mine lining
PL178022B3
(pl )
2000-02-29
Górnicza obudowa zmechanizowana