US2457587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material reclamation system
Assignee: Individual
•
Filing: 1945-04-07
•
Granted: 1948-12-28
•
Expires: 1965-04-07
Abstract
No abstract record available.
Inventors
- 👤 Mcilvaine Robert Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:22
CPC Classifications
B; B22; B22C; B22C5/00; B22C5/08; B22C5/04; B22C5/0409; B22C5/0422; B22C5/0427; Y; Y10; Y10S; Y10S241/00; Y10S241/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1433429A
Cited
US1401678A
Cited
US1352381A
Cited
US1435930A
Cited
GB192677A
Cited
US1627585A
Cited
US2192310A
Cited
US2412057A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-28 | 1952-06-28 | 1952-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-28 | 1956-06-28 | 1956-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-28 | 1960-06-28 | 1960-12-28 | $7700.00 | Window Closed / Lapsed |