US3451401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave ultrasonic apparatus
Assignee: Individual
•
Filing: 1967-10-12
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Granted: 1969-06-24
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Expires: 1987-10-12
Abstract
No abstract record available.
Inventors
- 👤 Melvin L Levinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:00
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/6426; A; A47; A47L; A47L15/00; A47L15/02; A47L15/13; B; B08; B08B; B08B3/00; B08B3/04; B08B3/10; B08B3/12; D; D06; D06F; D06F19/00; H05B6/6402; H05B6/6405; H05B6/647; H05B6/6491; H05B6/6494; A47L2601/00; A47L2601/12; A47L2601/17
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1671557A
Cited
US2216388A
Cited
US2985003A
Cited
US3184400A
Cited
US3329529A
Cited
US3410116A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |