US3521960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1964-01-20
•
Granted: 1970-07-28
•
Expires: 1984-01-20
Abstract
No abstract record available.
Inventors
- 👤 Harry S Newcomer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:12
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/12; G01J3/14; G01J3/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE356402C
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GB166028A
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US2206521A
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US2339053A
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US2613572A
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US3079834A
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US2948185A
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US3098408A
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US3011391A
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US3131482A
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US3211056A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |