US1004760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal separator for gases.
Assignee: JOHN J GERLACH JR
•
Filing: 1910-03-02
•
Granted: 1911-10-03
•
Expires: 1930-03-02
Abstract
No abstract record available.
Inventors
- 👤 John Fetzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:05
CPC Classifications
B; B04; B04B; B04B1/00; B04B1/04; B04B1/08; Y; Y10; Y10S; Y10S494/00; Y10S494/90
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) | 1914-10-02 | 1915-04-03 | 1915-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-10-02 | 1919-04-03 | 1919-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-10-02 | 1923-04-03 | 1923-10-03 | $7700.00 | Window Closed / Lapsed |