Patent US3528424A successfully refreshed from Google Patents.
US3528424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser surgical knife equipment
Assignee: Individual
•
Filing: 1967-02-17
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Granted: 1970-09-15
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Expires: 1987-02-17
Abstract
No abstract record available.
Inventors
- 👤 Waldemar A Ayres
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:25
CPC Classifications
B; B23; B23K; B23K26/00; B23K26/08; B23K26/10; A; A61; A61B; A61B18/00; A61B18/18; A61B18/20; A61B18/201; G; G02; G02B; G02B7/00; G02B7/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |