US2444249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal for shafts
Assignee: ESTEY PUMP Co Inc
•
Filing: 1944-11-17
•
Granted: 1948-06-29
•
Expires: 1964-11-17
Abstract
No abstract record available.
Inventors
- 👤 Maynard E Estey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:50
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US836408A
Cited
US1813016A
Cited
FR664854A
Cited
US2023898A
Cited
US2237494A
Cited
US2362436A
Cited
US2370471A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-29 | 1951-12-29 | 1952-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-29 | 1955-12-29 | 1956-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-29 | 1959-12-29 | 1960-06-29 | $7700.00 | Window Closed / Lapsed |