EX-4.20
from S-3
87 pages
Allis-Chalmers Energy Inc. and Wells Fargo Bank, National Association Trustee Indenture Dated as of , 20___ Subordinated Debt Securities Allis-Chalmers Energy Inc. Reconciliation and Tie Between Trust Indenture Act of 1939, as Amended, and Indenture, Dated as of __, 20
12/34/56
EX-4.19
from S-3
72 pages
Allis-Chalmers Energy Inc. and Wells Fargo Bank, National Association Trustee Indenture Dated as of ___, 20___ Senior Debt Securities Allis-Chalmers Energy Inc. Reconciliation and Tie Between Trust Indenture Act of 1939, as Amended, and Indenture, Dated as of __, 20
12/34/56
