Patent US4976194A successfully refreshed from Google Patents.
Patent US2784083A successfully refreshed from Google Patents.
US2784083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stainless steel castings
Assignee: Armco Inc
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Filing: 1953-09-29
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Granted: 1957-03-05
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Expires: 1973-09-29
Abstract
No abstract record available.
Inventors
- 👤 George E Linnert
- 👤 Jr William C Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:43
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C38/42
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
29 words
PRECIPITATION-HARDENED WELDED CASTINGS CONSISTING ESSENTIALLY OF ABOUT 16.0% TO 17.0% CHROMIUM, ABOUT 3% TO 4% NICKEL, ABOUT 2.0% TO 3.0% COPPER, AND CARBON NOT EXCEEDING 0.12%, AND REMAINDER IRON.
References Cited (Backward Citations)
US2482098A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-04 | 1960-09-03 | 1961-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-04 | 1964-09-03 | 1965-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-04 | 1968-09-03 | 1969-03-05 | $7700.00 | Window Closed / Lapsed |