Patent US2462821A successfully refreshed from Google Patents.
US2462821A
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Method of making composite articles
Assignee: SK Wellman Corp
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Filing: 1945-01-22
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Granted: 1949-02-22
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Expires: 1965-01-22
Abstract
No abstract record available.
Inventors
- 👤 Samuel K Wellman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:53
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/027; F16D65/00; F16D65/02; F16D2065/13; F16D2065/1304; F16D2065/132; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12347
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE22282E
Cited
US2115980A
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US2185875A
Cited
US2153173A
Cited
US2287952A
Cited
US2262983A
Cited
US2341739A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-22 | 1952-08-23 | 1953-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-22 | 1956-08-23 | 1957-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-22 | 1960-08-23 | 1961-02-22 | $7700.00 | Window Closed / Lapsed |