US1479304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating system for vertical shafts
Assignee: KROGH PUMP AND MACHINERY Co
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Filing: 1918-05-29
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Granted: 1924-01-01
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Expires: 1938-05-29
Abstract
No abstract record available.
Inventors
- 👤 Mary L Krogh
- 👤 Fannie J Clarke
- 👤 C A Krogh
- 👤 Poulsen Oscar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:48
CPC Classifications
F; F16; F16N; F16N9/00; F16N9/02; F16N7/00; F16N7/14; F16N7/16; F16N7/36; F16N7/366
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) | 1926-12-31 | 1927-07-02 | 1928-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-12-31 | 1931-07-02 | 1932-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-12-31 | 1935-07-02 | 1936-01-01 | $7700.00 | Window Closed / Lapsed |