US1220773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing solid ribs on sheet-metal tubes.
Assignee: Individual
•
Filing: 1916-12-23
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Granted: 1917-03-27
•
Expires: 1936-12-23
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:16
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/08; B23K11/082; B23K2101/00; B23K2101/04; B23K2101/12
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) | 1920-03-26 | 1920-09-25 | 1921-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-03-26 | 1924-09-25 | 1925-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-03-26 | 1928-09-25 | 1929-03-27 | $7700.00 | Window Closed / Lapsed |