US691740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic polishing-tool.
Assignee: EMPIRE PNEUMATIC TOOL Co
•
Filing: 1901-02-25
•
Granted: 1902-01-28
•
Expires: 1921-02-25
Abstract
No abstract record available.
Inventors
- 👤 John W Birkenstock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:20
CPC Classifications
B; B24; B24B; B24B23/00; B24B23/02; Y; Y10; Y10S; Y10S415/00; Y10S415/904
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) | 1905-01-27 | 1905-07-29 | 1906-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1909-01-27 | 1909-07-29 | 1910-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1913-01-27 | 1913-07-29 | 1914-01-28 | $7700.00 | Window Closed / Lapsed |