USD424676SExpiredUtility

Air filtration apparatus

Assignee: EMERSON ELECTRIC COPriority: Oct 2, 1998Filed: Oct 2, 1998Granted: May 9, 2000

Est. expiryOct 2, 2018(expired)· nominal 20-yr term from priority

PatentIndex Score

Cited by

References

Claims

exact text as granted — not AI-modified

The ornamental design for an air filtration apparatus, as shown and described.

Join the waitlist — get patent alerts

Track USD424676S — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.