Patent US5461229A successfully refreshed from Google Patents.
US2646042A
Expired / Lapsed
US
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Medical apparatus
Assignee: Individual
•
Filing: 1951-05-18
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Granted: 1953-07-21
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Expires: 1971-05-18
Abstract
No abstract record available.
Inventors
- 👤 Hu Quang Hsi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:42
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/31; A61B; A61B17/00; A61B17/34; A61B17/3401; A61B17/3403; A61B2017/00017; A61B2017/00022; A61B90/00; A61B90/06; A61B2090/064; A61M2005/3125; A61M2005/3126; A61M2005/3128; A61M5/315; A61M5/31501; A61M2005/31508; A61M2005/3151; A61M5/32; A61M2005/3201; A61M2205/00; A61M2205/33; A61M2205/3331; A61M2205/3344; A61M2205/58; A61M2205/583; A61M2205/585; A61M5/31511; A61M5/329; A61M5/3291; A61M5/3295; A61M5/3297
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |