US3022361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical device
Assignee: 3M Co
•
Filing: 1956-10-24
•
Granted: 1962-02-20
•
Expires: 1976-10-24
Abstract
No abstract record available.
Inventors
- 👤 Robert W Fritts
- 👤 Karrer Sebastian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:31
CPC Classifications
H; H10; H10N; H10N10/00; H10N10/80; H10N10/81; H10N10/813; G; G01; G01K; G01K7/00; G01K7/02; G01K7/04; G01K7/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US511245A
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GB154454A
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US1651750A
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US2012465A
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US2232961A
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US2154131A
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US2175695A
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US2691056A
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US2626970A
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US2783290A
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US2858350A
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US2811569A
Cited
US2802894A
Cited
US2892591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |