Patent US3315490A successfully refreshed from Google Patents.
Patent US1625340A successfully refreshed from Google Patents.
US1625340A
Expired / Lapsed
US
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Method of making well points
Assignee: Youngstown Sheet and Tube Co
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Filing: 1926-03-13
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Granted: 1927-04-19
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Expires: 1946-03-13
Abstract
No abstract record available.
Inventors
- 👤 Thomas C Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:35
CPC Classifications
B; B21; B21J; B21J5/00; B21J5/06; B21J5/08; B21J7/00; B21J7/02; B21J7/18; B21K; B21K21/00; B21K21/12; B21K21/14
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) | 1930-04-18 | 1930-10-18 | 1931-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-04-18 | 1934-10-18 | 1935-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-04-18 | 1938-10-18 | 1939-04-19 | $7700.00 | Window Closed / Lapsed |