US2950867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse powder feed for detonation waves
Assignee: Union Carbide Corp
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Filing: 1959-05-25
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Granted: 1960-08-30
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Expires: 1979-05-25
Abstract
No abstract record available.
Inventors
- 👤 George P Hawley
- 👤 Lewis M Cowden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:35
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/0006; C; C23; C23C; C23C4/00; C23C4/12; C23C4/126
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) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |