Patent US1483602A successfully refreshed from Google Patents.
US1483602A
Expired / Lapsed
US
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Derrick fitting
Assignee: Parkersburg Rig and Reel Co
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Filing: 1920-12-24
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Granted: 1924-02-12
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Expires: 1940-12-24
Abstract
No abstract record available.
Inventors
- 👤 Bloss Richard Ralph
- 👤 Schwemlein William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:24
CPC Classifications
E; E21; E21B; E21B15/00; Y; Y10; Y10T; Y10T403/00; Y10T403/34; Y10T403/341; Y10T403/342; Y10T403/345; Y10T403/346; Y10T403/55; Y10T403/551
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) | 1927-02-11 | 1927-08-13 | 1928-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-02-11 | 1931-08-13 | 1932-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-02-11 | 1935-08-13 | 1936-02-12 | $7700.00 | Window Closed / Lapsed |