Patent US1388658A successfully refreshed from Google Patents.
US1388658A
Expired / Lapsed
US
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Magnetic controlling device
Assignee: Individual
•
Filing: 1917-10-16
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Granted: 1921-08-23
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Expires: 1937-10-16
Abstract
No abstract record available.
Inventors
- 👤 Marshall Cesar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:49
CPC Classifications
F; F42; F42B; F42B22/00; F42B22/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1924-08-22 | 1925-02-21 | 1925-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-08-22 | 1929-02-21 | 1929-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-08-22 | 1933-02-21 | 1933-08-23 | $7700.00 | Window Closed / Lapsed |