US2935242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pumping apparatus
Assignee: WC Heraus GmbH and Co KG
•
Filing: 1956-07-16
•
Granted: 1960-05-03
•
Expires: 1976-07-16
Abstract
No abstract record available.
Inventors
- 👤 Lorenz Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:24
CPC Classifications
F; F04; F04C; F04C28/00; F04C28/08; F04C25/00; F04C25/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2372326A
Cited
US2491482A
Cited
US2441855A
Cited
US2492075A
Cited
US2674188A
Cited
US2721694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |