SPHERIX INC Note Agreements
3 Contracts & Agreements
- Convertible Promissory Note dated January 29, 2021 (Filed With SEC on February 3, 2021)
- SPHERIX INCORPORATED 0.25% PROMISSORY NOTE (Filed With SEC on August 6, 2013)
- NOTE PURCHASE AGREEMENT (Filed With SEC on August 6, 2013)
