Patent US1725299A successfully refreshed from Google Patents.
US1725299A
Expired / Lapsed
US
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Well reamer
Assignee: Individual
•
Filing: 1927-03-03
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Granted: 1929-08-20
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Expires: 1947-03-03
Abstract
No abstract record available.
Inventors
- 👤 Rowland O Pickin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:52
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/26; Y; Y10; Y10T; Y10T408/00; Y10T408/44; Y10T408/45; Y10T408/89; Y10T408/905; Y10T408/906
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) | 1932-08-19 | 1933-02-18 | 1933-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-08-19 | 1937-02-18 | 1937-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-08-19 | 1941-02-18 | 1941-08-20 | $7700.00 | Window Closed / Lapsed |