Patent US3303531A successfully refreshed from Google Patents.
US3303531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinnerette
Assignee: Engelhard Industries Inc
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Filing: 1965-02-26
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Granted: 1967-02-14
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Expires: 1985-02-26
Abstract
No abstract record available.
Inventors
- 👤 Ogden Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:50
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/058; C22C38/00; C22C38/18; C22C38/40
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
12 words
A SPINNERETTE COMPOSED OF AN ALLOY OF 65% NI AND 35% CR.
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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |