US2621608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for imposing pressure on liquid
Assignee: Individual
•
Filing: 1947-07-31
•
Granted: 1952-12-16
•
Expires: 1967-07-31
Abstract
No abstract record available.
Inventors
- 👤 Mcintyre Frederic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:31
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/08; F04B43/10; F04B43/113; F04B43/1136; F01; F01L; F01L33/00; F01L33/02; F04B49/00; F04B49/02; F04B49/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US345253A
Cited
US2216374A
Cited
US2220209A
Cited
US2324701A
Cited
US2347379A
Cited
US2412107A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |