US884942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding attachment for check-valves.
Assignee: Individual
•
Filing: 1907-09-26
•
Granted: 1908-04-14
•
Expires: 1927-09-26
Abstract
No abstract record available.
Inventors
- 👤 Milton P Maxwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:01
CPC Classifications
B; B24; B24B; B24B15/00; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4245; Y10T137/4273; Y10T137/428; Y10T137/4287; Y10T137/4315; Y10T137/4322; Y10T137/4329; Y10T82/00; Y10T82/29
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) | 1911-04-14 | 1911-10-14 | 1912-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-04-14 | 1915-10-14 | 1916-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-04-14 | 1919-10-14 | 1920-04-14 | $7700.00 | Window Closed / Lapsed |