Patent US1930982A successfully refreshed from Google Patents.
US1930982A
Expired / Lapsed
US
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Oil well stuffing box
Assignee: NORRIS BROTHERS Inc
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Filing: 1930-10-21
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Granted: 1933-10-17
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Expires: 1950-10-21
Abstract
No abstract record available.
Inventors
- 👤 Daniel E Norris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:04
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/18; F16J15/184; F16J15/185; F16J15/186; E; E21; E21B; E21B33/00; E21B33/02; E21B33/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1936-10-16 | 1937-04-17 | 1937-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-10-16 | 1941-04-17 | 1941-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-10-16 | 1945-04-17 | 1945-10-17 | $7700.00 | Window Closed / Lapsed |