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US2918608A
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Selective group energizing system
Assignee: Individual
•
Filing: 1956-06-25
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Granted: 1959-12-22
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Expires: 1976-06-25
Abstract
No abstract record available.
Inventors
- 👤 Harold F Rieth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:11
CPC Classifications
H; H03; H03K; H03K17/00; G; G08; G08B; G08B5/00; G08B5/22; G08B5/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1065513A
Cited
US2021010A
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US1967887A
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US2049763A
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US2136441A
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US2114678A
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US2142106A
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US2309205A
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US2710786A
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US2806756A
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US2749480A
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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) | 1962-12-21 | 1963-06-22 | 1963-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-21 | 1967-06-22 | 1967-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-21 | 1971-06-22 | 1971-12-22 | $7700.00 | Window Closed / Lapsed |