US2454218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite asbestos member
Assignee: Westinghouse Electric Corp
•
Filing: 1943-11-10
•
Granted: 1948-11-16
•
Expires: 1963-11-10
Abstract
No abstract record available.
Inventors
- 👤 Earl L Schulman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:26
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/02; H01B3/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T442/00; Y10T442/60; Y10T442/659; Y10T442/67; Y10T442/696
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US404913A
Cited
US906252A
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US1019406A
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GB250525A
Cited
US1673239A
Cited
GB309506A
Cited
US1947096A
Cited
US1982539A
Cited
US2162953A
Cited
US2182668A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-16 | 1952-05-17 | 1952-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-16 | 1956-05-17 | 1956-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-16 | 1960-05-17 | 1960-11-16 | $7700.00 | Window Closed / Lapsed |