US2997630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Holding switch
Assignee: TDK Micronas GmbH
•
Filing: 1956-08-30
•
Granted: 1961-08-22
•
Expires: 1976-08-30
Abstract
No abstract record available.
Inventors
- 👤 Paul W Kruse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:39
CPC Classifications
H; H01; H01H; H01H47/00; H01H47/22; H01H47/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE19199E
Cited
US1694511A
Cited
US1965849A
Cited
US1938184A
Cited
US2096863A
Cited
US1871626A
Cited
US2145021A
Cited
US2773219A
Cited
US2776357A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |