US2991376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable power unit
Assignee: Globe Union Inc
•
Filing: 1957-10-03
•
Granted: 1961-07-04
•
Expires: 1977-10-03
Abstract
No abstract record available.
Inventors
- 👤 Edwin T Sherwood
- 👤 Schimek Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:59
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/70; H01; H01M; H01M50/00; H01M50/20; H01M50/204; H01M50/207; H01M50/209; H01M50/271; Y; Y02; Y02E; Y02E60/00; Y02E60/10
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) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |