US2345842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noise eliminator
Assignee: OXZYN Co
•
Filing: 1943-10-14
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Granted: 1944-04-04
•
Expires: 1963-10-14
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Valentine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:07
CPC Classifications
A; A61; A61F; A61F11/00; A61F11/06; A61F11/14; A61F11/08; A61F11/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-04-04 | 1947-10-04 | 1948-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-04-04 | 1951-10-04 | 1952-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-04-04 | 1955-10-04 | 1956-04-04 | $7700.00 | Window Closed / Lapsed |