US2904616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Encased electrical apparatus having pressure relief means
Assignee: McGraw Edison Co
•
Filing: 1958-03-18
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Granted: 1959-09-15
•
Expires: 1978-03-18
Abstract
No abstract record available.
Inventors
- 👤 John F Koepke
- 👤 John J Zimsky
- 👤 William A Mocker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:11
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/08; H01F27/10; H01F27/12; H01F27/14; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7738
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |