US3532545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unitary conically-shaped grid for a lead-acid cell
Assignee: AT&T Inc
•
Filing: 1968-10-03
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Granted: 1970-10-06
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Expires: 1988-10-03
Abstract
No abstract record available.
Inventors
- 👤 Louis D Babusci
- 👤 Biagio A Cretella
- 👤 David O Feder
- 👤 Donald E Koontz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:00
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/04; H01M10/0413; H01M10/0463; H01M10/0477; H01M10/06; H01M10/12; H01M50/00; H01M50/10; H01M50/172; H01M50/174; H01M50/179; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US331407A
Cited
US434376A
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US670648A
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US948639A
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US1092253A
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US2469508A
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US2625574A
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US2702650A
Cited
US3198540A
Cited
US3204806A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |