Patent US1830697A successfully refreshed from Google Patents.
US1830697A
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US
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Oil dispensing mechanism
Assignee: Aro Equipment Corp
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Filing: 1930-12-20
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Granted: 1931-11-03
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Expires: 1950-12-20
Abstract
No abstract record available.
Inventors
- 👤 George H Hartman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:49
CPC Classifications
F; F16; F16N; F16N27/00; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3124; Y10T137/3127; Y10T137/4238; Y10T137/4245; Y10T137/4673; Y10T137/474; Y10T137/4807; Y10T137/8593; Y10T137/87096
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) | 1934-11-02 | 1935-05-04 | 1935-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-11-02 | 1939-05-04 | 1939-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-11-02 | 1943-05-04 | 1943-11-03 | $7700.00 | Window Closed / Lapsed |