US2825778A
Expired / Lapsed
US
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Assignee: Electrical Apparatus Co Ltd
•
Filing: 1953-07-03
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Granted: 1958-03-04
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Expires: 1973-07-03
Abstract
No abstract record available.
Inventors
- 👤 Waldo J Kelleigh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:09
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/02; H01H13/26; H01H13/36; H01H13/40
Claims Analysis
Total Claims: 0
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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) | 1961-03-03 | 1961-09-02 | 1962-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-03 | 1965-09-02 | 1966-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-03 | 1969-09-02 | 1970-03-04 | $7700.00 | Window Closed / Lapsed |