US2807484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-renewing rod packing
Assignee: Individual
•
Filing: 1950-09-08
•
Granted: 1957-09-24
•
Expires: 1970-09-08
Abstract
No abstract record available.
Inventors
- 👤 Herman V D Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:41
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/18; F16J15/184; F16J15/185; F16J15/186
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE308651C
Cited
US534575A
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US786976A
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FR599500A
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US1868199A
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US2090769A
Cited
US2232293A
Cited
US2150529A
Cited
US2204915A
Cited
US2348004A
Cited
GB567346A
Cited
US2567527A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |