US3452905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-sealing leak-proof pump
Assignee: Leeds and Micallef
•
Filing: 1968-02-16
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Granted: 1969-07-01
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Expires: 1988-02-16
Abstract
No abstract record available.
Inventors
- 👤 Lewis A Micallef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:26
CPC Classifications
F; F04; F04B; F04B9/00; F04B9/14; B; B05; B05B; B05B11/00; B05B11/01; B05B11/10; B05B11/1028; B05B11/1042; B05B11/1059; F04B43/00; F04B43/0009; F04B43/0054; F04B43/0063; G; G01; G01F; G01F11/00; G01F11/02; G01F11/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |