US3495977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stainless steel resistant to stress corrosion cracking
Assignee: Armco Inc
•
Filing: 1965-09-30
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Granted: 1970-02-17
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Expires: 1985-09-30
Abstract
No abstract record available.
Inventors
- 👤 Elbert E Denhard Jr
- 👤 Ronald H Espy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:03
CPC Classifications
F; F28; F28F; F28F21/00; F28F21/08; F28F21/081; F28F21/082; B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3053; B23K35/3066; C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/055
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1542233A
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US1962702A
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US2215734A
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US2451547A
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US2894833A
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US2792155A
Cited
GB986061A
Cited
US3113021A
Cited
US3168397A
Cited
US3384476A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |