Patent US2446515A successfully refreshed from Google Patents.
US2446515A
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US
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Method of forming bearing structures
Assignee: Individual
•
Filing: 1945-03-24
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Granted: 1948-08-03
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Expires: 1965-03-24
Abstract
No abstract record available.
Inventors
- 👤 Richard I N Weingart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:34
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/04; B21K25/00; Y; Y10; Y10S; Y10S29/00; Y10S29/023; Y10T; Y10T29/00; Y10T29/49; Y10T29/49579; Y10T29/49636; Y10T29/49696; Y10T29/49826; Y10T29/49945
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-03 | 1952-02-02 | 1952-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-03 | 1956-02-02 | 1956-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-03 | 1960-02-02 | 1960-08-03 | $7700.00 | Window Closed / Lapsed |