 |
| |||
| permanent joint (Alexander Demidov); sealed assembly (Alexander Demidov) | |||
| demountable joint (able to be dismantled or removed from its setting and readily reassembled or repositioned. NOED Alexander Demidov) | |||
| permanent bond | |||
| demountable joint | |||
|
| |||
| permanent joint (Alexander Demidov); sealed assembly (Alexander Demidov) | |||
| demountable joint (able to be dismantled or removed from its setting and readily reassembled or repositioned. NOED Alexander Demidov) | |||
| permanent bond | |||
| demountable joint | |||