Patent US2613246A successfully refreshed from Google Patents.
US2613246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic system
Assignee: Individual
•
Filing: 1950-05-04
•
Granted: 1952-10-07
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Expires: 1970-05-04
Abstract
No abstract record available.
Inventors
- 👤 Spodig Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:04
CPC Classifications
B; B03; B03C; B03C1/00; B03C1/02; B03C1/28; H; H01; H01F; H01F7/00; H01F7/02; H01F7/0231; H01F7/0252; H01F7/0257; Y; Y10; Y10S; Y10S74/00; Y10S74/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2503173A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |