US1372197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube-flaring apparatus
Assignee: Imperial Brass Manufacturing Co
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Filing: 1919-11-10
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Granted: 1921-03-22
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Expires: 1939-11-10
Abstract
No abstract record available.
Inventors
- 👤 Walter J Rudolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:06
CPC Classifications
B; B21; B21D; B21D41/00; B21D41/02; B21D41/021
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) | 1924-03-21 | 1924-09-20 | 1925-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-03-21 | 1928-09-20 | 1929-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-03-21 | 1932-09-20 | 1933-03-22 | $7700.00 | Window Closed / Lapsed |