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US2988591A
Expired / Lapsed
US
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Sectional switchgear housing
Assignee: Appleton Electric LLC
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Filing: 1957-11-29
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Granted: 1961-06-13
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Expires: 1977-11-29
Abstract
No abstract record available.
Inventors
- 👤 Arthur I Appleton
- 👤 Nils A Tornblom
- 👤 Carl H Lindell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:28
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/02; H01H9/04; H01H9/042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US378878A
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US2335233A
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US1466361A
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US2050854A
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US2158477A
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US2240922A
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US2345757A
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US2305482A
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US2666119A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |