Patent US2420184A successfully refreshed from Google Patents.
US2420184A
Expired / Lapsed
US
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Cover fastening device
Assignee: Cutler Hammer Inc
•
Filing: 1944-11-03
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Granted: 1947-05-06
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Expires: 1964-11-03
Abstract
No abstract record available.
Inventors
- 👤 Harold L Mekelburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:36
CPC Classifications
H; H02; H02B; H02B1/00; H02B1/015; H02B1/06; Y; Y10; Y10S; Y10S220/00; Y10S220/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE231441C
Cited
US1471340A
Cited
US1528473A
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US1660548A
Cited
US1906669A
Cited
US2108883A
Cited
US2368619A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-05-05 | 1950-11-04 | 1951-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-05-05 | 1954-11-04 | 1955-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-05-05 | 1958-11-04 | 1959-05-06 | $7700.00 | Window Closed / Lapsed |