US2187755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming bearings
Assignee: RTX Corp
•
Filing: 1936-12-11
•
Granted: 1940-01-23
•
Expires: 1956-12-11
Abstract
No abstract record available.
Inventors
- 👤 Earle A Ryder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:00
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/22; F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/12; F16C33/122; F16C33/124; F16C33/125; F16C33/14; F16C33/24; F16C2223/00; F16C2223/02; F16C2223/30; F16C2223/70; F16C3/00; F16C3/02; F16C9/00; F16C9/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49705; Y10T29/4998; Y10T29/49988; Y10T29/49989
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-01-22 | 1943-07-24 | 1944-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-01-22 | 1947-07-24 | 1948-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-01-22 | 1951-07-24 | 1952-01-23 | $7700.00 | Window Closed / Lapsed |