US3056923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicating instruments and magnetic structures therefor
Assignee: Individual
•
Filing: 1959-11-19
•
Granted: 1962-10-02
•
Expires: 1979-11-19
Abstract
No abstract record available.
Inventors
- 👤 Louis W Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:51
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/04; H02K3/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1764258A
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US2773239A
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US2865002A
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US985457A
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US1680465A
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US2346555A
Cited
US2683921A
Cited
US2943215A
Cited
US2871450A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |