US2618673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1950-07-17
•
Granted: 1952-11-18
•
Expires: 1970-07-17
Abstract
No abstract record available.
Inventors
- 👤 John K Shannon
- 👤 Robert R Schmit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:22
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/10; H01M50/147; H01M50/50; H01M50/528; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1703735A
Cited
US1882414A
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US1692316A
Cited
US1942351A
Cited
US1907420A
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GB462004A
Cited
GB510238A
Cited
US2387590A
Cited
US2480964A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-18 | 1956-05-19 | 1956-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-18 | 1960-05-19 | 1960-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-18 | 1964-05-19 | 1964-11-18 | $7700.00 | Window Closed / Lapsed |