US1301544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gyroscopic sedimentation apparatus.
Assignee: Individual
•
Filing: 1918-05-06
•
Granted: 1919-04-22
•
Expires: 1938-05-06
Abstract
No abstract record available.
Inventors
- 👤 Benjamin B Crombie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:05
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/26; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86348
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) | 1922-04-21 | 1922-10-21 | 1923-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1926-04-21 | 1926-10-21 | 1927-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1930-04-21 | 1930-10-21 | 1931-04-22 | $7700.00 | Window Closed / Lapsed |