US2815490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromechanical delay device
Assignee: TDK Micronas GmbH
•
Filing: 1951-03-28
•
Granted: 1957-12-03
•
Expires: 1971-03-28
Abstract
No abstract record available.
Inventors
- 👤 Faymoreau Etienne De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:21
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/02; H03H9/125; H03H9/13; H03H9/133; H03H9/30; H03H9/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1486821A
Cited
US1682712A
Cited
US2406391A
Cited
US2401094A
Cited
US2495740A
Cited
US2419894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-02 | 1961-06-03 | 1961-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-02 | 1965-06-03 | 1965-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-02 | 1969-06-03 | 1969-12-03 | $7700.00 | Window Closed / Lapsed |