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US2828743A
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US
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Snap-on cartridge-needle unit
Assignee: Wyeth LLC
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Filing: 1957-06-17
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Granted: 1958-04-01
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Expires: 1977-06-17
Abstract
No abstract record available.
Inventors
- 👤 David M Ashkenaz
- 👤 Marston L Hamlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:29
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/28; A61M5/285; A61M5/288; A61M5/31; A61M5/315; A61M5/31511; A61M5/31515; A61M5/32; A61M5/34; A61M5/348; A61M5/24; A61M5/3202
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1961490A
Cited
US2671450A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |