US2821653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical storage system
Assignee: AIRBORNE INSTR LAB Inc
•
Filing: 1949-10-19
•
Granted: 1958-01-28
•
Expires: 1969-10-19
Abstract
No abstract record available.
Inventors
- 👤 John N Dyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:56
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/21; G11C11/23; H; H01; H01J; H01J31/00; H01J31/08; H01J31/58; H01J31/60; H01J31/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2259507A
Cited
US2213179A
Cited
US2454410A
Cited
US2549072A
Cited
US2472165A
Cited
US2547638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-27 | 1961-07-29 | 1962-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-27 | 1965-07-29 | 1966-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-27 | 1969-07-29 | 1970-01-28 | $7700.00 | Window Closed / Lapsed |