Patent US2384260A successfully refreshed from Google Patents.
US2985018A
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US
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Vibration wave distance measuring device
Assignee: North American Aviation Corp
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Filing: 1956-10-22
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Granted: 1961-05-23
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Expires: 1976-10-22
Abstract
No abstract record available.
Inventors
- 👤 Frank K Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:06
CPC Classifications
G; G01; G01S; G01S15/00; G01S15/02; G01S15/06; G01S15/08; G01S15/32; G01S15/36; G01H; G01H9/00; G01H9/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2733597A
Cited
US1044502A
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US2253975A
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US2520297A
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US2728902A
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US2721975A
Cited
FR1126419A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |