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Patent US1386304A successfully refreshed from Google Patents.
US1386304A
Expired / Lapsed
US
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Oiling device for turbine-pumps
Assignee: STERLING IRON WORKS
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Filing: 1920-02-04
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Granted: 1921-08-02
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Expires: 1940-02-04
Abstract
No abstract record available.
Inventors
- 👤 William F Barnickol
- 👤 Alfred W Archer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:58
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/06; F04D29/061; Y; Y10; Y10S; Y10S415/00; Y10S415/901
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) | 1924-08-01 | 1925-01-31 | 1925-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-08-01 | 1929-01-31 | 1929-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-08-01 | 1933-01-31 | 1933-08-02 | $7700.00 | Window Closed / Lapsed |