US1418697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube and rod tapering
Assignee: GEN SEAMLESS TUBE Co
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Filing: 1919-02-11
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Granted: 1922-06-06
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Expires: 1939-02-11
Abstract
No abstract record available.
Inventors
- 👤 Louis H Brinkman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:05
CPC Classifications
B; B21; B21C; B21C3/00; B21C3/02; B21C3/08; B21C37/00; B21C37/06; B21C37/15; B21C37/16; B21C37/18
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) | 1925-06-05 | 1925-12-05 | 1926-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-06-05 | 1929-12-05 | 1930-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-06-05 | 1933-12-05 | 1934-06-06 | $7700.00 | Window Closed / Lapsed |