US2441481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detachable electrode assembly for primary cells
Assignee: Thomas A Edison Inc
•
Filing: 1944-05-26
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Granted: 1948-05-11
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Expires: 1964-05-26
Abstract
No abstract record available.
Inventors
- 👤 Philip A Garrity
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:57
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/50; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US19759A
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US496878A
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US1676945A
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US744989A
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US779693A
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US1776552A
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GB223487A
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GB262814A
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FR619671A
Cited
DE666583C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-11 | 1951-11-10 | 1952-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-11 | 1955-11-10 | 1956-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-11 | 1959-11-10 | 1960-05-11 | $7700.00 | Window Closed / Lapsed |