US2775211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double action pumps
Assignee: Linde GmbH
•
Filing: 1952-05-20
•
Granted: 1956-12-25
•
Expires: 1972-05-20
Abstract
No abstract record available.
Inventors
- 👤 Lahoda Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:09
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/14; F04B53/144; F04B1/00; F04B1/02; F04B15/00; F04B15/06; F04B15/08; F04B23/00; F04B23/02; F04B53/008; F04B7/00; F04B7/04; Y; Y10; Y10S; Y10S417/00; Y10S417/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US304670A
Cited
US1001667A
Cited
US1568147A
Cited
US1878317A
Cited
USRE19054E
Cited
US2292375A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-25 | 1960-06-25 | 1960-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-25 | 1964-06-25 | 1964-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-25 | 1968-06-25 | 1968-12-25 | $7700.00 | Window Closed / Lapsed |