US2449678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control syringe
Assignee: Individual
•
Filing: 1946-06-06
•
Granted: 1948-09-21
•
Expires: 1966-06-06
Abstract
No abstract record available.
Inventors
- 👤 Lester B Stallcup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:25
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/20; A61M5/204; A61M5/31; A61M2005/3128
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB133585A
Cited
US2322753A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-21 | 1952-03-22 | 1952-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-21 | 1956-03-22 | 1956-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-21 | 1960-03-22 | 1960-09-21 | $7700.00 | Window Closed / Lapsed |