US2928426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm for pump
Assignee: Malsbary Manufacturing Co
•
Filing: 1952-06-27
•
Granted: 1960-03-15
•
Expires: 1972-06-27
Abstract
No abstract record available.
Inventors
- 👤 Walter W Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:51
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/0009; F04B43/0054; F04B43/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US556702A
Cited
US1885457A
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US2042510A
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US1992491A
Cited
US2185784A
Cited
US2261365A
Cited
US2328009A
Cited
FR925748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |