US2563413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromechanical device
Assignee: —
•
Filing: —
•
Granted: 1951-08-07
•
Expires: 1968-08-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:53
CPC Classifications
H; H01; H01F; H01F21/00; H01F21/005; H04; H04R; H04R3/00; H04R3/04; H04R3/08; H04R9/00; H04R9/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US357054A
Cited
US1544754A
Cited
US793777A
Cited
US1533749A
Cited
GB373973A
Cited
US1961783A
Cited
US2159105A
Cited
US2294881A
Cited
GB542395A
Cited
US2436946A
Cited
US2367576A
Cited
US2371373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |