Patent US950999A successfully refreshed from Google Patents.
US950999A
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US
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Apparatus for aerating water.
Assignee: Individual
•
Filing: 1909-06-10
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Granted: 1910-03-01
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Expires: 1929-06-10
Abstract
No abstract record available.
Inventors
- 👤 Georg Erlwein
- 👤 Ernst Marquardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:23
CPC Classifications
B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/231; B01F23/23105; B01F23/2312; B01F23/23124; B01F23/23123; B01F23/234; B01F23/2341; B01F23/23413; B01F25/00; B01F25/20; B01F25/21; B01F25/211; B01F25/30; B01F25/31; B01F25/312; Y; Y10; Y10S; Y10S261/00; Y10S261/07; Y10S261/75; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3009
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) | 1913-02-28 | 1913-08-30 | 1914-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-02-28 | 1917-08-30 | 1918-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-02-28 | 1921-08-30 | 1922-03-01 | $7700.00 | Window Closed / Lapsed |