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US3489579A
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US
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Ablative heat shielding and injection cooling by addition of surface active agents
Assignee: United States Department of the Army
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Filing: 1966-05-25
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Granted: 1970-01-13
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Expires: 1986-05-25
Abstract
No abstract record available.
Inventors
- 👤 Bernard Steverding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:17
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/02; C09K5/04; B; B64; B64G; B64G1/00; B64G1/22; B64G1/52; B64G1/58; C03; C03C; C03C3/00; C03C3/04; C03C3/06
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) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |