US2619437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primary cells
Assignee: Zenith Electronics LLC
•
Filing: 1948-05-21
•
Granted: 1952-11-25
•
Expires: 1968-05-21
Abstract
No abstract record available.
Inventors
- 👤 Glasstone Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:57
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/04; H01M6/045; H01M10/00; H01M10/06; H01M10/08; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US5400A
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US1032623A
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US1684852A
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US1901364A
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GB389738A
Cited
GB432775A
Cited
GB534618A
Cited
US2275054A
Cited
US2391289A
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US2490598A
Cited
US2441896A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-25 | 1956-05-26 | 1956-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-25 | 1960-05-26 | 1960-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-25 | 1964-05-26 | 1964-11-25 | $7700.00 | Window Closed / Lapsed |