US2450818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic noise eliminator
Assignee: Individual
•
Filing: 1944-08-26
•
Granted: 1948-10-05
•
Expires: 1964-08-26
Abstract
No abstract record available.
Inventors
- 👤 Raymond K Vermillion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:11
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/06; H04B1/10; H04B1/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1748277A
Cited
US1722789A
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US1981056A
Cited
US2138123A
Cited
US2183714A
Cited
US2227057A
Cited
US2192275A
Cited
US2255374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-05 | 1952-04-05 | 1952-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-05 | 1956-04-05 | 1956-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-05 | 1960-04-05 | 1960-10-05 | $7700.00 | Window Closed / Lapsed |