Patent US2632410A successfully refreshed from Google Patents.
Patent US2843404A successfully refreshed from Google Patents.
US2843404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical seal assembly for rotating shafts
Assignee: ITT Bell and Gossett Inc
•
Filing: 1955-06-24
•
Granted: 1958-07-15
•
Expires: 1975-06-24
Abstract
No abstract record available.
Inventors
- 👤 Ralph W Janetz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:03
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3464; F16J15/348; F04; F04D; F04D29/00; F04D29/08; F04D29/10; F04D29/12; F04D29/126; F16J15/3496
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2352636A
Cited
US2395705A
Cited
US2425209A
Cited
US2653837A
Cited
GB695087A
Cited
US2785913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |