US2730795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wire line sheave and method of fabrication
Assignee: DRESSER EQUIPMENT Co
•
Filing: 1951-02-06
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Granted: 1956-01-17
•
Expires: 1971-02-06
Abstract
No abstract record available.
Inventors
- 👤 Richard R Bloss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:13
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/26; B21D53/261; F; F16; F16H; F16H55/00; F16H55/32; F16H55/36; F16H55/44; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49453; Y10T29/49455; Y10T29/4946
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US421669A
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US897667A
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US903532A
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US917450A
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US1413051A
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US1497337A
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US1947462A
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US2065275A
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US2320163A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |