US3459953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Energy storage system
Assignee: Oklahoma State University
•
Filing: 1967-03-20
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Granted: 1969-08-05
•
Expires: 1987-03-20
Abstract
No abstract record available.
Inventors
- 👤 William L Hughes
- 👤 Stanley O Brauser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:54
CPC Classifications
F; F01; F01K; F01K25/00; F01K25/005; Y; Y10; Y10S; Y10S123/00; Y10S123/12; Y10S204/00; Y10S204/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2036613A
Cited
US2098629A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |