Patent US2564977A successfully refreshed from Google Patents.
US2564977A
Expired / Lapsed
US
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Medical injecting apparatus
Assignee: Individual
•
Filing: 1949-01-19
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Granted: 1951-08-21
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Expires: 1969-01-19
Abstract
No abstract record available.
Inventors
- 👤 Hu Quang Hsi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:26
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0021; A61M25/0023; A61M25/0026; A61M25/0028; A61M5/00; A61M5/14; A61M5/158; A61M5/1582; A61M25/003; A61M2025/0031; A61M25/0032
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US350895A
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US1109626A
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US1209846A
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US1266228A
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US1402011A
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FR575559A
Cited
DE446818C
Cited
US1553859A
Cited
US1842134A
Cited
US1943120A
Cited
US2137132A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-20 | 1955-02-19 | 1955-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-20 | 1959-02-19 | 1959-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-20 | 1963-02-19 | 1963-08-21 | $7700.00 | Window Closed / Lapsed |