US3024388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective systems
Assignee: AT&T Inc
•
Filing: 1957-11-07
•
Granted: 1962-03-06
•
Expires: 1977-11-07
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank H Blitchington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:15
CPC Classifications
G; G01; G01R; G01R1/00; G01R1/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2431151A
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US2424298A
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US2767804A
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US2812476A
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US2767309A
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US2828450A
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US2841746A
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US2866925A
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US2866106A
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US2832900A
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US2864975A
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US2951976A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-05 | 1965-09-04 | 1966-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-05 | 1969-09-04 | 1970-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-05 | 1973-09-04 | 1974-03-06 | $7700.00 | Window Closed / Lapsed |