Patent US3524447A successfully refreshed from Google Patents.
US3524447A
Expired / Lapsed
US
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Method of making a rigid tipped polyvinyl catheter
Assignee: General Electric Co
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Filing: 1964-04-06
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Granted: 1970-08-18
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Expires: 1984-04-06
Abstract
No abstract record available.
Inventors
- 👤 Robert P Evans
- 👤 Edward G Dykstra
- 👤 Richard R Van Geem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:56
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0009; A61M25/001; A61L; A61L29/00; A61L29/04; A61L29/041
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) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |