Patent US2955958A successfully refreshed from Google Patents.
Patent US2212994A successfully refreshed from Google Patents.
US2212994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balanced gear pump
Assignee: L Outil R SA BV
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Filing: 1938-01-21
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Granted: 1940-08-27
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Expires: 1958-01-21
Abstract
No abstract record available.
Inventors
- 👤 Vrolix Albert Sylvai Toussaint
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:34
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/082; F04C2/086; F04C15/00; F04C15/0042
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) | 1943-08-27 | 1944-02-26 | 1944-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-08-27 | 1948-02-26 | 1948-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-08-27 | 1952-02-26 | 1952-08-27 | $7700.00 | Window Closed / Lapsed |