Patent US2839052A successfully refreshed from Google Patents.
US2839052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Appliance for treating infections
Assignee: Individual
•
Filing: 1953-01-22
•
Granted: 1958-06-17
•
Expires: 1973-01-22
Abstract
No abstract record available.
Inventors
- 👤 William L Verch
- 👤 Meyer I Block
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:31
CPC Classifications
A; A61; A61D; A61D7/00; A61D11/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |