US2816466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Particle smoothing apparatus
Assignee: Pangborn Corp
•
Filing: 1950-11-29
•
Granted: 1957-12-17
•
Expires: 1970-11-29
Abstract
No abstract record available.
Inventors
- 👤 Wiltie I Gladfelter
- 👤 Ralph R Garver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:57
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49712
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US99209A
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US1334929A
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US1427457A
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US1608717A
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DE547769C
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GB376760A
Cited
US1941770A
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US2313876A
Cited
US2423287A
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US2585657A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-16 | 1961-06-17 | 1961-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-16 | 1965-06-17 | 1965-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-16 | 1969-06-17 | 1969-12-17 | $7700.00 | Window Closed / Lapsed |