diff --git a/rx.js/rx.js.joinpatterns.d.ts b/rx.js/rx.js.joinpatterns.d.ts
index fe6cf6bdd..1f1c40d7b 100644
--- a/rx.js/rx.js.joinpatterns.d.ts
+++ b/rx.js/rx.js.joinpatterns.d.ts
@@ -2,19 +2,55 @@
 
 // Type definitions for RxJS-Join package
 // Project: http://rx.codeplex.com/
-// Definitions by: Carl de Billy <http://carl.debilly.net/>
+// Definitions by: Igor Oleinikov <https://github.com/Igorbek>
 // Definitions: https://github.com/borisyankov/DefinitelyTyped
-//
-// Dependencies:
-// -> rx.js
-// -> rx.joinpatterns.js
 
 declare module Rx {
 
-	//interface Observable<T> {
-	//}
+	interface Pattern1<T1> {
+		and<T2>(other: Observable<T2>): Pattern2<T1, T2>;
+		then<TR>(selector: (item1: T1) => TR): Plan<TR>;
+	}
+	interface Pattern2<T1, T2> {
+		and<T3>(other: Observable<T3>): Pattern3<T1, T2, T3>;
+		then<TR>(selector: (item1: T1, item2: T2) => TR): Plan<TR>;
+	}
+	interface Pattern3<T1, T2, T3> {
+		and<T4>(other: Observable<T4>): Pattern4<T1, T2, T3, T4>;
+		then<TR>(selector: (item1: T1, item2: T2, item3: T3) => TR): Plan<TR>;
+	}
+	interface Pattern4<T1, T2, T3, T4> {
+		and<T5>(other: Observable<T5>): Pattern5<T1, T2, T3, T4, T5>;
+		then<TR>(selector: (item1: T1, item2: T2, item3: T3, item4: T4) => TR): Plan<TR>;
+	}
+	interface Pattern5<T1, T2, T3, T4, T5> {
+		and<T6>(other: Observable<T6>): Pattern6<T1, T2, T3, T4, T5, T6>;
+		then<TR>(selector: (item1: T1, item2: T2, item3: T3, item4: T4, item5: T5) => TR): Plan<TR>;
+	}
+	interface Pattern6<T1, T2, T3, T4, T5, T6> {
+		and<T7>(other: Observable<T7>): Pattern7<T1, T2, T3, T4, T5, T6, T7>;
+		then<TR>(selector: (item1: T1, item2: T2, item3: T3, item4: T4, item5: T5, item6: T6) => TR): Plan<TR>;
+	}
+	interface Pattern7<T1, T2, T3, T4, T5, T6, T7> {
+		and<T8>(other: Observable<T8>): Pattern8<T1, T2, T3, T4, T5, T6, T7, T8>;
+		then<TR>(selector: (item1: T1, item2: T2, item3: T3, item4: T4, item5: T5, item6: T6, item7: T7) => TR): Plan<TR>;
+	}
+	interface Pattern8<T1, T2, T3, T4, T5, T6, T7, T8> {
+		and<T9>(other: Observable<T9>): Pattern9<T1, T2, T3, T4, T5, T6, T7, T8, T9>;
+		then<TR>(selector: (item1: T1, item2: T2, item3: T3, item4: T4, item5: T5, item6: T6, item7: T7, item8: T8) => TR): Plan<TR>;
+	}
+	interface Pattern9<T1, T2, T3, T4, T5, T6, T7, T8, T9> {
+		then<TR>(selector: (item1: T1, item2: T2, item3: T3, item4: T4, item5: T5, item6: T6, item7: T7, item8: T8, item9: T9) => TR): Plan<TR>;
+	}
 
+	interface Plan<T> { }
 
-	//interface Observable {
-	//}
+	interface Observable<T> {
+		and<T2>(other: Observable<T2>): Pattern2<T, T2>;
+		then<TR>(selector: (item1: T) => TR): Plan<TR>;
+	}
+
+	interface ObservableStatic {
+		when<TR>(plan: Plan<TR>): Observable<TR>;
+	}
 }