US3413548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric current responsive means including a portable magnet indicator
Assignee: Individual
•
Filing: 1964-10-05
•
Granted: 1968-11-26
•
Expires: 1984-10-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Edmund O Schweitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:52
CPC Classifications
G; G01; G01R; G01R5/00; G01R5/14; G01R5/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1724973A
Cited
US1942052A
Cited
US2367299A
Cited
US2779927A
Cited
US2722581A
Cited
US3074060A
Cited
US3158796A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |