Patent US2988004A successfully refreshed from Google Patents.
US2988004A
Expired / Lapsed
US
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Power pack unit
Assignee: Electrol Inc
•
Filing: 1957-02-14
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Granted: 1961-06-13
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Expires: 1977-02-14
Abstract
No abstract record available.
Inventors
- 👤 Benjamin N Ashton
- 👤 Rawding Emerson
- 👤 Pessler Henry Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:06
CPC Classifications
F; F15; F15B; F15B1/00; F15B1/26; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85978; Y10T137/86035; Y10T137/86059
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1415617A
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US2311443A
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US2134501A
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US2187036A
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US2132363A
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US2214257A
Cited
US2680347A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |