US947536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-speed compression and vacuum pump.
Assignee: Individual
•
Filing: 1909-05-26
•
Granted: 1910-01-25
•
Expires: 1929-05-26
Abstract
No abstract record available.
Inventors
- 👤 Max Wenkel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:47
CPC Classifications
A; A47; A47K; A47K5/00; A47K5/06; A47K5/12; A47K5/1202; A47K5/1204; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7841
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) | 1913-01-24 | 1913-07-26 | 1914-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-01-24 | 1917-07-26 | 1918-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-01-24 | 1921-07-26 | 1922-01-25 | $7700.00 | Window Closed / Lapsed |