Carborundum Company

Bulletin No. 506 0 Resinoid Bonded Grinding Metals, Hercules Mfg. Company, Centerville, Iowa. Addition to the licensee list and quantity buyers discount list.

Bulletin No. 507 - License Agreement -- Patented Resinoid Bonded Grinding Wheels, Batavia metal Products, Inc., Batavia, Illinois. Additions to licensee list.

Bulletin No. 508 - License Agreement -- Patented Resinoid Bonded Grinding Wheels. Additional buyers and subsidiaries to the licensee list.

Bulletin No. 510 - License Agreement -- Patented Resinoid Bonded Grinding Wheels, Maximum Oversize Tolerance. Adjustments and allowances for manufacture of wheels with new oversize tolerances.

Bulletin No 511, A-D - License Agreement -- Patented Resinoid Bonded Products. A series of letters and updated licensing agreement sheets related to price increases.

Bulletin No. 512 - License Agreement -- Patented Resinoid Bonded Products, Price Guarantees. Letter and updated pricing sheet with new price protection terms.

Bulletin No. 513 - License Agreement -- Patented Resinoid Bonded Products. Additional revision and updated agreement sheet.

Bulletin No. 514 - Revised Prices, Patented Resinoid Bonded Products, Dominion of Canada. Letter and revisions of pricing schedules for Canadian licensees with relation to Wartime Prices and Trade Board.

Bulletin No. 515 - License Agreement -- Patented Resinoid Bonded Grinding Wheels. Removal of company from authorized list of buyers and updates to government pricing recipients.

Bulletin No. 516 - License Agreement -- Patented Resinoid Bonded Grinding Wheels. Maximum Oversize Tolerances Permissible. Explanation and updated sheets for maximum oversized tolerances.