Patent US2990300A successfully refreshed from Google Patents.
US2990300A
Expired / Lapsed
US
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Protective device
Assignee: McGraw Edison Co
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Filing: 1957-12-16
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Granted: 1961-06-27
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Expires: 1977-12-16
Abstract
No abstract record available.
Inventors
- 👤 Paskell Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:19
CPC Classifications
C; C25; C25F; C25F3/00; C25F3/16; C25F3/22; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/125; Y10T428/12514
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1640335A
Cited
US1892832A
Cited
US1776217A
Cited
US2046686A
Cited
US2165029A
Cited
US2352283A
Cited
US2785992A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |