US2437694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for blending powder grains
Assignee: National Aeronautics and Space Administration
•
Filing: 1946-05-15
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Granted: 1948-03-16
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Expires: 1966-05-15
Abstract
No abstract record available.
Inventors
- 👤 Clarence N Hickman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:05
CPC Classifications
C; C06; C06B; C06B21/00; C06B21/0083
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US654647A
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US1545872A
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US1616547A
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US1706405A
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US1836063A
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DE588037C
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US2068356A
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GB537408A
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US2379056A
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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) | 1951-03-16 | 1951-09-15 | 1952-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-16 | 1955-09-15 | 1956-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-16 | 1959-09-15 | 1960-03-16 | $7700.00 | Window Closed / Lapsed |