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Patent US2995727A successfully refreshed from Google Patents.
US2995727A
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US
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Means for comparing wave shapes
Assignee: International Business Machines Corp
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Filing: 1957-10-29
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Granted: 1961-08-08
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Expires: 1977-10-29
Abstract
No abstract record available.
Inventors
- 👤 Edward A Quade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:03
CPC Classifications
G; G10; G10L; G10L25/00; G10L25/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2526425A
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US2663758A
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US2774037A
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US2794965A
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US2821702A
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US2842663A
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US2901729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |