Patent US3491747A successfully refreshed from Google Patents.
US3491747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curette device
Assignee: Individual
•
Filing: 1966-08-12
•
Granted: 1970-01-27
•
Expires: 1986-08-12
Abstract
No abstract record available.
Inventors
- 👤 Ralph R Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:52
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0291
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US618521A
Cited
US752356A
Cited
US651395A
Cited
US654763A
Cited
US687112A
Cited
US1092914A
Cited
US2397823A
Cited
US2994321A
Cited
US3088454A
Cited
US3342175A
Cited
US3404677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |