US2453929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic pump
Assignee: Individual
•
Filing: 1947-03-11
•
Granted: 1948-11-16
•
Expires: 1967-03-11
Abstract
No abstract record available.
Inventors
- 👤 Alvin F O'harah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:20
CPC Classifications
A; A47; A47J; A47J31/00; A47J31/44; A47J31/46; A47J31/468; F; F04; F04B; F04B9/00; F04B9/08; F04B9/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1951-11-16 | 1952-05-17 | 1952-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-16 | 1956-05-17 | 1956-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-16 | 1960-05-17 | 1960-11-16 | $7700.00 | Window Closed / Lapsed |