US2617360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid displacement device
Assignee: Individual
•
Filing: 1945-05-10
•
Granted: 1952-11-11
•
Expires: 1965-05-10
Abstract
No abstract record available.
Inventors
- 👤 Virgil D Barker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:02
CPC Classifications
F; F01; F01B; F01B3/00; F01B3/04; F04; F04B; F04B1/00; F04B1/12; F04B1/122; F04B1/124; F04B1/20; F04B1/2014; F04B1/2064; F04B1/22; F04B49/00; F04B49/005; F04B7/00; F04B7/04; F02; F02B; F02B75/00; F02B75/16; F02B75/18; F02B2075/1804; F02B2075/184
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1982150A
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US2016144A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-11 | 1956-05-12 | 1956-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-11 | 1960-05-12 | 1960-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-11 | 1964-05-12 | 1964-11-11 | $7700.00 | Window Closed / Lapsed |