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Patent US2831597A successfully refreshed from Google Patents.
US2831597A
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Switch box embodying integrallyformed anchoring means for cooperating wall-engaging elements
Assignee: Individual
•
Filing: 1954-06-09
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Granted: 1958-04-22
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Expires: 1974-06-09
Abstract
No abstract record available.
Inventors
- 👤 Grasso Frank C Lo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:57
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/02; H02G3/08; H02G3/12; H02G3/123
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US916436A
Cited
US1519927A
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US1725293A
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US1821083A
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US1935601A
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US2039550A
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US2261650A
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US2367043A
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US2692697A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |