...specified in the contract tiled with the Commission ; nor shall any such motor carrier or railroad refund or remit in any manner or by any device any portion of the compensation so specified, nor extend to any freight forwarder or person any privileges or facilities...

...file with the Commission and duly published and in effect at the time; nor shall any such carrier r refund, or remit in any manner or by any device any portion of the ,tes or charges so specified, nor extend or deny to any person any privilege or facility, except in...

...schedules filed with the Board [Commission] and duly posted and in effect at the time; nor shall any such carrier refund or remit in any manner or by any device any portion of the rates, fares, or charges so specified, nor extend or deny to any person any privilege or facility, except in accordance...

...with the Commission and duly published and in effect at the time; nor shall any such carrier rebate, refund, or remit in any manner or by any device any portion of the rates or charges so specified, nor extend or deny to any person any privilege or facility, except in accordance...

...requirements that all published tariff rates shall be strictly observed, and that no common carrier shall refund or remit in any manner, or by any device, any portion of the charges collected under regular applicable tariffs. 9. In those instances where the defendant shipper-owners...

...the Commission and duly published and in effect at the time, nor shall any intermodal carrier rebate, refund, or remit in any manner or by any device any portion of the single-factor rates so specified, nor extend or deny to any person any privilege or facility, except...

...and filed rate of the water carrier be charged and among other things forbids a carrier to rebate, refund, or remit in any manner or by any device any portion of such rates. Elimination of such practices should provide an inducement to both exporters and importers...

...with the Commission and duly published and in effect at the time; nor shall any such carrier rebate, refund, or remit in any manner or by any device any portion of the rates or charges so specified. But because the Congress was aware of the possibility that errors in filed...

...service provided under the certificate. (b) No pipeline carrier may directly or indirectly refund, rebate or remit in any manner, or by any device, any portion of the rates and charges or charge, demand or receive a greater or lesser compensation for service than is specified...

...trucker "is not the agent or employee of the Lessor • Section 2 of the 1933 Act forbids carriers to "refund or remit in any manner or by any device any portion of the rates, fares, or charges . . . specified [in their tariffs filed with the Commission]." [respondent] for any purpose...