US1448528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centering device
Assignee: Individual
•
Filing: 1920-12-11
•
Granted: 1923-03-13
•
Expires: 1940-12-11
Abstract
No abstract record available.
Inventors
- 👤 Richard P Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:58
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/40; Y; Y10; Y10S; Y10S409/00; Y10S409/903; Y10T; Y10T29/00; Y10T29/49; Y10T29/49762; Y10T29/53; Y10T29/53909; Y10T29/53913; Y10T29/53917; Y10T409/00; Y10T409/30; Y10T409/309576; Y10T409/309912; Y10T82/00; Y10T82/26; Y10T82/266; Y10T82/268
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) | 1926-03-12 | 1926-09-11 | 1927-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-03-12 | 1930-09-11 | 1931-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-03-12 | 1934-09-11 | 1935-03-13 | $7700.00 | Window Closed / Lapsed |