US2732807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm pump
Assignee: —
•
Filing: —
•
Granted: 1956-01-31
•
Expires: 1973-01-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:53
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/0009; F04B43/0081; F04B43/009; F01; F01L; F01L23/00; F04B43/02; F04B43/06; F04B43/073; F04B43/0733; F04B43/0736
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2357872A
Cited
US1782144A
Cited
US1851666A
Cited
US2383193A
Cited
US2419993A
Cited
US2491230A
Cited
US2578746A
Cited
US2445293A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-30 | 1959-08-01 | 1960-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-30 | 1963-08-01 | 1964-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-30 | 1967-08-01 | 1968-01-31 | $7700.00 | Window Closed / Lapsed |