US2471142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injection device
Assignee: Individual
•
Filing: 1945-04-24
•
Granted: 1949-05-24
•
Expires: 1965-04-24
Abstract
No abstract record available.
Inventors
- 👤 Floyd O Chaffee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:19
CPC Classifications
F; F01; F01B; F01B11/00; F01B11/04; F01B11/06; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/8593; Y10T137/87571; Y10T137/87676
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US854445A
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US888469A
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GB241361A
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US1680103A
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FR626413A
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US1883139A
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US1937893A
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US1996942A
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US2002337A
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US2172951A
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US2244698A
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US2230004A
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US2225087A
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US2369232A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-23 | 1952-11-22 | 1953-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-23 | 1956-11-22 | 1957-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-23 | 1960-11-22 | 1961-05-24 | $7700.00 | Window Closed / Lapsed |