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Patent US2549112A successfully refreshed from Google Patents.
US2549112A
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Self-contained mechanical seal with o-ring
Assignee: Crane Packing Co
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Filing: 1946-10-17
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Granted: 1951-04-17
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Expires: 1966-10-17
Abstract
No abstract record available.
Inventors
- 👤 Robert F Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:24
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/38; Y; Y10; Y10S; Y10S277/00; Y10S277/91
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1425268A
Cited
GB266479A
Cited
US1972393A
Cited
US1859436A
Cited
US2379868A
Cited
US2365046A
Cited
US2429953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-16 | 1954-10-16 | 1955-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-16 | 1958-10-16 | 1959-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-16 | 1962-10-16 | 1963-04-17 | $7700.00 | Window Closed / Lapsed |