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Patent US2820895A successfully refreshed from Google Patents.
US2820895A
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Pulse height analyzer
Assignee: Individual
•
Filing: 1953-10-28
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Granted: 1958-01-21
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Expires: 1973-10-28
Abstract
No abstract record available.
Inventors
- 👤 Johnstone Charles Wilkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:56
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2561772A
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US2646510A
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US2536816A
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US2551529A
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US2552013A
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US2575087A
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US2556074A
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US2600919A
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US2655650A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |