Patent US2313387A successfully refreshed from Google Patents.
US2313387A
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US
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Oiling system for rotary pumps
Assignee: Individual
•
Filing: 1941-01-29
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Granted: 1943-03-09
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Expires: 1961-01-29
Abstract
No abstract record available.
Inventors
- 👤 Herbert A Mcarthur
- 👤 John B Decker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:29
CPC Classifications
F; F16; F16N; F16N7/00; F16N7/30; F04; F04C; F04C29/00; F04C29/02; Y; Y10; Y10S; Y10S418/00; Y10S418/01
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) | 1946-03-08 | 1946-09-07 | 1947-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-03-08 | 1950-09-07 | 1951-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-03-08 | 1954-09-07 | 1955-03-09 | $7700.00 | Window Closed / Lapsed |