US2583867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft seal
Assignee: ROTARY SEAL Co
•
Filing: 1945-05-04
•
Granted: 1952-01-29
•
Expires: 1965-05-04
Abstract
No abstract record available.
Inventors
- 👤 Walter W Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:53
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1273738A
Cited
US2104569A
Cited
US2167986A
Cited
US2200413A
Cited
US2233624A
Cited
US2377452A
Cited
US2411509A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-28 | 1955-07-30 | 1956-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-28 | 1959-07-30 | 1960-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-28 | 1963-07-30 | 1964-01-29 | $7700.00 | Window Closed / Lapsed |