US3508545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter placement unit for paracervical anesthesia
Assignee: Dow Silicones Corp
•
Filing: 1967-11-16
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Granted: 1970-04-28
•
Expires: 1987-11-16
Abstract
No abstract record available.
Inventors
- 👤 James R Reif
- 👤 Perry E Prather
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:38
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1640311A
Cited
US2880724A
Cited
US3308819A
Cited
US3359978A
Cited
US3380448A
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US3399674A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-27 | 1973-10-27 | 1974-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-27 | 1977-10-27 | 1978-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-27 | 1981-10-27 | 1982-04-28 | $7700.00 | Window Closed / Lapsed |