Patent US2845894A successfully refreshed from Google Patents.
US2845894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallurgy
Assignee: Individual
•
Filing: 1953-03-04
•
Granted: 1958-08-05
•
Expires: 1973-03-04
Abstract
No abstract record available.
Inventors
- 👤 Oran T Mcilvaine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:47
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C30; C30B; C30B23/00; C30B23/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1710747A
Cited
US2151786A
Cited
US2353612A
Cited
US2439983A
Cited
US2476145A
Cited
US2527747A
Cited
US2633427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |