US1891904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube drawing machine
Assignee: Individual
•
Filing: 1927-09-12
•
Granted: 1932-12-27
•
Expires: 1947-09-12
Abstract
No abstract record available.
Inventors
- 👤 George E Barnhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:04
CPC Classifications
B; B21; B21C; B21C3/00; B21C3/02; B21C3/12; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12201; Y10T428/12229; Y10T428/12271; Y10T428/12285
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) | 1935-12-27 | 1936-06-27 | 1936-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-12-27 | 1940-06-27 | 1940-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-12-27 | 1944-06-27 | 1944-12-27 | $7700.00 | Window Closed / Lapsed |