US2604047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-stage hydraulic pressure pump
Assignee: HULMAN
•
Filing: 1945-09-19
•
Granted: 1952-07-22
•
Expires: 1965-09-19
Abstract
No abstract record available.
Inventors
- 👤 Beaman Bernard
- 👤 Hulman Julius
- 👤 Robert A Stein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:21
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/22; F04B49/24; F04B1/00; F04B1/12; F04B1/20; F04B1/2007; F04B1/2014; F04B1/2035; F04B1/2078; F04B1/26; F04B1/30; F04B1/32; F04B1/324; F04B23/00; F04B23/04; F04B23/08; F04B23/10; F04B23/106; F04B23/12
Claims Analysis
Total Claims: 0
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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) | 1955-07-22 | 1956-01-21 | 1956-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-22 | 1960-01-21 | 1960-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-22 | 1964-01-21 | 1964-07-22 | $7700.00 | Window Closed / Lapsed |