US2678729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatically operative magnetic separator
Assignee: Individual
•
Filing: 1951-10-16
•
Granted: 1954-05-18
•
Expires: 1971-10-16
Abstract
No abstract record available.
Inventors
- 👤 Spodig Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:26
CPC Classifications
B; B03; B03C; B03C1/00; B03C1/02; B03C1/10; B03C1/12; B03C1/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US467645A
Cited
US792776A
Cited
US1136215A
Cited
US1148990A
Cited
GB194107A
Cited
US1527070A
Cited
US2149764A
Cited
US2466839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-17 | 1957-11-16 | 1958-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-17 | 1961-11-16 | 1962-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-17 | 1965-11-16 | 1966-05-18 | $7700.00 | Window Closed / Lapsed |