US2893707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of ultrasonic treatment and device
Assignee: Individual
•
Filing: 1955-08-29
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Granted: 1959-07-07
•
Expires: 1975-08-29
Abstract
No abstract record available.
Inventors
- 👤 Leslie K Gulton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:34
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/34; C02F1/36; B; B01; B01F; B01F31/00; B01F31/80; B01F31/85; B01J; B01J19/00; B01J19/08; B01J19/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-06 | 1963-01-05 | 1963-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-06 | 1967-01-05 | 1967-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-06 | 1971-01-05 | 1971-07-07 | $7700.00 | Window Closed / Lapsed |