| 221 |
Method of excavating rock, ore and the like by blasting and means for use in said method |
US6729860 |
1960-11-04 |
US3099216A |
1963-07-30 |
KJELL JAKOBSEN; KJAERNER SEMB TORD |
|
| 222 |
Seismographic exploration |
US67883657 |
1957-08-19 |
US3059575A |
1962-10-23 |
GRIFFITH GEORGE L; WELLS FRANKLIN B |
|
| 223 |
Disposal of encased explosives |
US35369253 |
1953-05-07 |
US3054349A |
1962-09-18 |
PLUMLEY HAROLD J |
|
| 224 |
Explosive cartridge |
US79381459 |
1959-02-17 |
US3007409A |
1961-11-07 |
BROSKE WILLIAM F |
|
| 225 |
Cartridge for exothermic reaction material |
US81061459 |
1959-05-04 |
US2997165A |
1961-08-22 |
LEUTHY HENRY R; LEONARD GELFAND |
|
| 226 |
Packages containing a material for use in blasting |
US54818055 |
1955-11-21 |
US2892377A |
1959-06-30 |
HENRY DAVIDSON SAMUEL |
|
| 227 |
Cored ammonium nitrate explosive cartridge |
US20333450 |
1950-12-29 |
US2754755A |
1956-07-17 |
RUTH JOHN A; VINCENT WAKEFIELD RALPH |
|
| 228 |
Explosive assembly |
US2733658D |
|
US2733658A |
1956-02-07 |
|
|
| 229 |
Multiple chamber container |
US41937954 |
1954-03-29 |
US2721552A |
1955-10-25 |
ANDRE NOSIK WILLIAM |
|
| 230 |
Hermetically sealed explosive cartridge |
US22758751 |
1951-05-22 |
US2667837A |
1954-02-02 |
WALTON MUSSER C; TURNBULL NORMAN K |
|
| 231 |
Container for safety blasting explosives |
US375648 |
1948-01-22 |
US2635543A |
1953-04-21 |
PERCY SILLITTO GEORGE; GEORGE ASHCROFT DONALD |
|
| 232 |
Explosive booster |
US6555848 |
1948-12-16 |
US2583802A |
1952-01-29 |
REGINALD WRIGHT HAROLD; WILLIAM MARTYN ROGER |
|
| 233 |
Explosive cartridge |
US53272344 |
1944-04-26 |
US2565380A |
1951-08-21 |
LAWRENCE ROBERT W |
|
| 234 |
Waterproof explosive cartridge |
US23102D |
|
USRE23102E |
1949-04-26 |
|
|
| 235 |
Ammonium nitrate explosive |
US51055143 |
1943-11-16 |
US2463709A |
1949-03-08 |
MCFARLAND DAVID M |
|
| 236 |
Method for making explosive assemblies |
US65156346 |
1946-03-02 |
US2448658A |
1948-09-07 |
CAREY CLAUDE H |
|
| 237 |
Waterproof explosive cartridge |
US46510542 |
1942-11-10 |
US2408189A |
1946-09-24 |
BAKER ARTHUR W |
|
| 238 |
Lowering device for large cartridges |
US47371543 |
1943-01-27 |
US2387701A |
1945-10-23 |
DOVE JR THOMAS |
|
| 239 |
Explosive cartridge |
US41829641 |
1941-11-08 |
US2378223A |
1945-06-12 |
JOHNSON JOHN B |
|
| 240 |
Safety blasting cap |
US36570140 |
1940-11-14 |
US2327902A |
1943-08-24 |
JOHNSON JOHN G |
|
