Patent US2554959A successfully refreshed from Google Patents.
Patent US2539996A successfully refreshed from Google Patents.
US2539996A
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Pump packing means
Assignee: Marquette Metal Products Co
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Filing: 1945-03-28
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Granted: 1951-01-30
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Expires: 1965-03-28
Abstract
No abstract record available.
Inventors
- 👤 Jerome D Gleitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:21
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/18; F16J15/184; Y; Y10; Y10S; Y10S411/00; Y10S411/955
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US982397A
Cited
US1230124A
Cited
US1530505A
Cited
US1394184A
Cited
US1717321A
Cited
US2210473A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-29 | 1954-07-31 | 1955-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-29 | 1958-07-31 | 1959-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-29 | 1962-07-31 | 1963-01-30 | $7700.00 | Window Closed / Lapsed |