US2633741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic noise detector
Assignee: EDWARD F LOWE
•
Filing: 1947-12-06
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Granted: 1953-04-07
•
Expires: 1967-12-06
Abstract
No abstract record available.
Inventors
- 👤 Walter F Sanders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:35
CPC Classifications
G; G01; G01H; G01H3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE645132C
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GB175311A
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US2009997A
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US2248653A
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US2340714A
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US2404143A
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US2405059A
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US2403999A
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US2468648A
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US2427364A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-06 | 1956-10-06 | 1957-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-06 | 1960-10-06 | 1961-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-06 | 1964-10-06 | 1965-04-07 | $7700.00 | Window Closed / Lapsed |