Patent US2869544A successfully refreshed from Google Patents.
US2869544A
Expired / Lapsed
US
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Injector
Assignee: IOWA COOPERATIVE ASS
•
Filing: 1957-10-30
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Granted: 1959-01-20
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Expires: 1977-10-30
Abstract
No abstract record available.
Inventors
- 👤 Karl A Ratcliff
- 👤 William A Dorrance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:45
CPC Classifications
A; A61; A61D; A61D1/00; A61D1/02; A61M; A61M3/00; A61M3/005; A61M31/00; A61M5/00; A61M5/178; A61M5/19; B; B01; B01F; B01F31/00; B01F31/44; B01F31/441; B01F33/00; B01F33/50; B01F33/501; B01F33/5011; B01F33/50112; B01F35/00; B01F35/71; B01F35/713; B01F35/7139; B01F35/716; B01F35/7161; A61M5/31; A61M5/315; A61M5/31596; A61M5/31598; B01F35/30; B01F35/32; B01F35/32005; B01F35/3202
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) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |