Patent US2550159A successfully refreshed from Google Patents.
US2550159A
Expired / Lapsed
US
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Pipe handling gear
Assignee: Pipe Line Service Corp
•
Filing: 1945-01-08
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Granted: 1951-04-24
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Expires: 1965-01-08
Abstract
No abstract record available.
Inventors
- 👤 Alfred O Mickelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:33
CPC Classifications
B; B05; B05C; B05C13/00; B05C13/02; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53683; Y10T29/53796; Y10T29/53896
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1911601A
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US1883964A
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US1791793A
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US1919186A
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US1927847A
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GB401975A
Cited
US2010820A
Cited
US2000351A
Cited
US2086160A
Cited
US2166608A
Cited
US2166609A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |