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US3548349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic control relay
Assignee: Individual
•
Filing: 1969-02-19
•
Granted: 1970-12-15
•
Expires: 1989-02-19
Abstract
No abstract record available.
Inventors
- 👤 Teizo Fujita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:13
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/54; H01H50/541; H01H50/545
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2778903A
Cited
US3099728A
Cited
US3161751A
Cited
US3225170A
Cited
US3243544A
Cited
US3409851A
Cited
US3451018A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |