Patent US2558052A successfully refreshed from Google Patents.
US2558052A
Expired / Lapsed
US
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Process of making solderless blades for electrical plug caps
Assignee: Heyman Manufacturing Co
•
Filing: 1948-03-04
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Granted: 1951-06-26
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Expires: 1968-03-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Ferdinand Klumpp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:33
CPC Classifications
H; H01; H01R; H01R43/00; H01R43/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49204; Y10T29/49208; Y10T29/49218
Claims Analysis
Total Claims: 0
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US2231349A
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US2406144A
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US2309311A
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US2396913A
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US2476738A
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US2483424A
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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) | 1954-06-25 | 1954-12-25 | 1955-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-25 | 1958-12-25 | 1959-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-25 | 1962-12-25 | 1963-06-26 | $7700.00 | Window Closed / Lapsed |