Patent US2950837A successfully refreshed from Google Patents.
US2950837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterproof enclosure for electrical devices
Assignee: Federal Pacific Electric Co
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Filing: 1957-07-03
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Granted: 1960-08-30
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Expires: 1977-07-03
Abstract
No abstract record available.
Inventors
- 👤 Paul M Christensen
- 👤 Clarence G Landeck
- 👤 John Michael J St
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:46
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/02; H02G3/08; H02G3/088
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US699215A
Cited
US1173854A
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US1462209A
Cited
US1796064A
Cited
US1788366A
Cited
US1869646A
Cited
US2295416A
Cited
US2680533A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |