|
US5771491A
|
|
Jacket and interchangeable lapel
|
|
US4945947A
|
|
Ball-type check valve
|
|
US4674569A
|
|
Stage cementing tool
|
|
US4655247A
|
|
Ball-type check valve assembly
|
|
SG94585G
|
|
Nonpolluting drilling fluid and composition and concentrate therefor
|
|
US4639388A
|
|
Ceramic-metal composites
|
|
US4449581A
|
|
Heat exchanger fin element with dog-bone type pattern of corrugations
|
|
US4428418A
|
|
Heat exchanger fin element with folded over side edges
|
|
US4399875A
|
|
Automatic support for folding wing frame implement
|
|
US4423789A
|
|
Offset disc harrow
|
|
US4415043A
|
|
Toolbar with wings foldable substantially 180 degrees
|
|
JPS57207163A
|
|
Improvement of alloy part mechanical properties
|
|
LU83427A1
|
|
Process for improving mechanical properties of alloy parts
|
|
BE889181A
|
|
Process for improving mechanical properties of alloy parts
|
|
NL8102631A
|
|
Method for removing structural defects in machine components made from aging iron, nickel, cobalt or titanes.
|
|
CA1179926A
|
|
Method of improving mechanical properties of alloy parts
|
|
GB2098119A
|
|
Method of improving mechanical properties of alloy parts
|
|
US4371039A
|
|
Tool bar control for agricultural implement
|
|
US4373591A
|
|
Implement and last motion hitch locking mechanism therefor
|
|
US4360067A
|
|
Transport lock system for an implement or the like
|
