Patent US2119187A successfully refreshed from Google Patents.
US3024644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic microscope
Assignee: University of Illinois at Urbana-Champaign
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Filing: 1957-01-16
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Granted: 1962-03-13
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Expires: 1977-01-16
Abstract
No abstract record available.
Inventors
- 👤 William J Fry
- 👤 Frank J Fry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:03
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/04; G01N29/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2164125A
Cited
US2278241A
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GB541959A
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US2461543A
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US2378237A
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US2618968A
Cited
AT170212B
Cited
US2700895A
Cited
US2593865A
Cited
GB696920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-12 | 1965-09-11 | 1966-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-12 | 1969-09-11 | 1970-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-12 | 1973-09-11 | 1974-03-13 | $7700.00 | Window Closed / Lapsed |