US2160735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metering pump
Assignee: Ex-Cell-O Corp
•
Filing: 1935-05-29
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Granted: 1939-05-30
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Expires: 1955-05-29
Abstract
No abstract record available.
Inventors
- 👤 James F Hoffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:04
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/02; F04B43/06; F04B43/067; F04B1/00; F04B1/12; F04B1/122; F04B1/124; F04B1/14; F04B23/00; F04B23/04; F04B23/06; F04B49/00; F04B49/22; F04B49/225; F04B7/00; F04B7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-05-29 | 1942-11-28 | 1943-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-05-29 | 1946-11-28 | 1947-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-05-29 | 1950-11-28 | 1951-05-30 | $7700.00 | Window Closed / Lapsed |