US1520749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antifriction bearing
Assignee: Individual
•
Filing: 1923-03-31
•
Granted: 1924-12-30
•
Expires: 1943-03-31
Abstract
No abstract record available.
Inventors
- 👤 Abel L Brownrigg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:15
CPC Classifications
B; B22; B22D; B22D13/00; B22D13/02; B22D13/023; Y; Y10; Y10S; Y10S164/00; Y10S164/02; Y10S76/00; Y10S76/03; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49647; Y10T29/49668; Y10T29/49677; Y10T29/49705; Y10T428/00; Y10T428/12; Y10T428/12458
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) | 1927-12-30 | 1928-06-30 | 1928-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-12-30 | 1932-06-30 | 1932-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-12-30 | 1936-06-30 | 1936-12-30 | $7700.00 | Window Closed / Lapsed |