Patent US3260659A successfully refreshed from Google Patents.
US3260659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stripping of chromium from beryllium
Assignee: North American Aviation Corp
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Filing: 1963-06-12
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Granted: 1966-07-12
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Expires: 1983-06-12
Abstract
No abstract record available.
Inventors
- 👤 Willing Robert
- 👤 Anthony S Squillace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:37
CPC Classifications
C; C25; C25F; C25F5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2185858A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |