US2549033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for feeding powdered material
Assignee: Airco Inc
•
Filing: 1946-09-11
•
Granted: 1951-04-17
•
Expires: 1966-09-11
Abstract
No abstract record available.
Inventors
- 👤 Joseph M Tyrner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:25
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/14; B05B7/1404; B05B7/144; B05B7/1445; B05B7/1463; B23; B23K; B23K7/00; B23K7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US741116A
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US799808A
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US1548324A
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US1991403A
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US2031369A
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US2098034A
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US2100878A
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US2164483A
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US2297791A
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US2240205A
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US2368395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-16 | 1954-10-16 | 1955-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-16 | 1958-10-16 | 1959-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-16 | 1962-10-16 | 1963-04-17 | $7700.00 | Window Closed / Lapsed |