Patent US2052057A successfully refreshed from Google Patents.
US3543752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infusion apparatus
Assignee: RUTH LEO HESSE
•
Filing: 1965-06-01
•
Granted: 1970-12-01
•
Expires: 1985-06-01
Abstract
No abstract record available.
Inventors
- 👤 Holger Hesse
- 👤 Carl Sloth
- 👤 Asger Brendstrup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:17
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/36; A61M1/3621; A61M1/3626; A61M5/00; A61M5/14; A61M5/142; A61M5/14212; A61M5/14216; A61M5/168; A61M5/16831; A61M5/1684; A61M5/36; A61M5/145; A61M5/1452; A61M2005/14533; A61M5/1685; A61M5/40
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |