US881471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing and assembling ball-bearings.
Assignee: Individual
•
Filing: 1907-06-13
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Granted: 1908-03-10
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Expires: 1927-06-13
Abstract
No abstract record available.
Inventors
- 👤 Ernst Gustav Hoffmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:44
CPC Classifications
F; F16; F16C; F16C19/00; F16C19/02; F16C19/04; F16C19/06; F16C43/00; F16C43/04; F16C2240/00; F16C2240/40; F16C2240/70; F16C2240/80; F16C2240/82; F16C2240/84; Y; Y10; Y10S; Y10S29/00; Y10S29/035; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49679; Y10T29/49682; Y10T29/49684; Y10T29/49826; Y10T29/49863; Y10T29/49865; Y10T29/53; Y10T29/53987
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) | 1911-03-10 | 1911-09-09 | 1912-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-03-10 | 1915-09-09 | 1916-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-03-10 | 1919-09-09 | 1920-03-10 | $7700.00 | Window Closed / Lapsed |