US3483739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic billet inspection apparatus
Assignee: Magnaflux Corp
•
Filing: 1965-06-30
•
Granted: 1969-12-16
•
Expires: 1985-06-30
Abstract
No abstract record available.
Inventors
- 👤 Richard S Gewartowski
- 👤 Frank T Makowski
- 👤 Joseph L Deibel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:53
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/22; G01N29/223
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
SU157551A1
Cited
US2852707A
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US2969671A
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US2951365A
Cited
DE1096076B
Cited
US2990512A
Cited
US3182490A
Cited
US3323354A
Cited
US3350925A
Cited
US3327523A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |