https://www.gao.gov/products/481671

B-128549: Aug 22, 1956

TO THE PHILIP CAREY MANUFACTURING COMPANY: FURTHER REFERENCE IS MADE TO YOUR LETTER OF JULY 3. ARE RESTRICTIVE AND SHOULD BE AMENDED TO PERMIT THE USE OF OTHER INSULATING MATERIALS WHICH YOU CONTEND ARE EQUAL OR SUPERIOR TO THAT REQUIRED BY THE SPECIFICATIONS. WE ARE ADVISED THAT THE INSULATING MATERIAL REQUIRED BY THE PARTICULAR SPECIFICATION (FEDERAL SPECIFICATION NO. HH-I-551A) IS CELLULAR GLAS...

https://www.gao.gov/products/431127

B-128549: Oct 30, 1956

TO THE PHILIP CAREY MANUFACTURING COMPANY: REFERENCE IS MADE TO YOUR LETTER OF AUGUST 31. YOU CONTEND THAT THE SPECIFICATION IS RESTRICTED FOR THE REASON THAT THE "OR EQUAL" CLAUSE WAS OMITTED AND BECAUSE THE SPECIFIED MATERIAL CAN BE PURCHASED. THE "OR EQUAL" CLAUSE IS GENERALLY EMPLOYED AND IS REQUIRED IN THOSE CIRCUMSTANCES WHEN. THE CLAUSE IS USED IN SUCH CASES TO INDICATE THAT A PRODUCT SUBST...