domain in Oklahoma. It was not required at that time to file a plat of its proposed feeder lines unless directed to do so by the Corporation Commission. The record does not indicate that the Corporation Commission has ever directed it to do this. We agree with the Appellee that it and its predecessors in title have had the right of eminent domain over Appellant’s property since complying with § 58, supra.
The Trial Court found:
“2. That under the provisions of 66 O.S.A. § 57 and Oklahoma Appellate Decisions, the exclusive remedy of any recovery would be in accord with said Statute by inverse condemnation, and that any such action would have to be brought by the owner of the real estate here in controversy at the time of the taking of the right-of-way now held and possessed by the above-named Defendant and Counter-Claimant.”
The general rule set forth in Syllabus 2 in Rogers v. Oklahoma City, 190 Okl. 78, 120 P.2d 997 (1942), is that the owner of the property at the time the pipeline is placed thereon is the only one who has a cause of action for damages in inverse condemnation:
“2. Where a city, having the power of eminent domain, has entered into actual, open and notorious possession of land necessary for its corporate purposes whether with or without the consent of the owner of such land, a subsequent vendee of the latter takes the land subject to the burden of the city, and the right to payment from the city, if the entry was unauthorized, belongs to the owner at the time the city took possession, unless such right has been specifically assigned or otherwise transferred to such subsequent purchaser.”
However, an exception to that rule is found in Consolidated Gas Service Co. v. Tyler, 178 Okl. 325, 63 P.2d 88 (1936), where this Court said:
“Plaintiff cites a number of cases holding in effect that where a corporation authorized to exercise the right of eminent domain takes possession of land without any proceeding to condemn, the right to compensation accrues to the owner at once and does not pass to a subsequent purchaser by a mere conveyance of the land.
“But an examination of the cases cited shows that they are all cases where railroad companies took possession of the land, constructed and maintained railroad tracks thereon, *.
“But here we have an entirely different situation. The undisputed evidence is that the pipe line was buried some 24 or 30 inches under the surface; that defendant had no knowledge whatever of its existence when he purchased the lots. There is no evidence whatever that -the former owner consented to the laying of the pipe line or had any knowledge thereof. There is nothing whatever tending to show that defendant purchased at a reduced price because of the existence of the pipe line. There is nothing in the record to show an estop-pel against defendant or the former owner.
“ ‘It is well settled that an estoppel cannot be set up against a party ignorant of the true state of affairs, or whose conduct was based upon pure mistake.’ St. L. & S. F. Ry. Co. v. Mann, 79 Okl. 160, 192 P. 231, 233.”
The above rule was affirmed in the case of Long v. City of Tulsa, 199 Ok. 217, 184 P.2d 800 (1947).
Appellant’s contention that it and its predecessors in title were unaware of the existence of Appellee’s pipeline across their property until sometime after September 27, 1971, is undisputed.
We find that this fact, combined with the exception contained in Consolidated Gas, supra, is applicable to the undisputed facts of this case and therefore hold that the Appellant has stated a cause of ac