US2610872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft seal
Assignee: Dynamatic Corp
•
Filing: 1948-10-06
•
Granted: 1952-09-16
•
Expires: 1968-10-06
Abstract
No abstract record available.
Inventors
- 👤 Charles T Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:07
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3496; F16J15/36
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1158719A
Cited
US1170285A
Cited
DE484628C
Cited
US1789978A
Cited
US1930312A
Cited
US2080403A
Cited
GB518339A
Cited
US2209856A
Cited
US2354478A
Cited
US2382960A
Cited
US2440155A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-16 | 1956-03-17 | 1956-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-16 | 1960-03-17 | 1960-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-16 | 1964-03-17 | 1964-09-16 | $7700.00 | Window Closed / Lapsed |