US2217194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making blowpipe nozzles
Assignee: Oxweld Acetylene Co
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Filing: 1937-10-09
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Granted: 1940-10-08
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Expires: 1957-10-09
Abstract
No abstract record available.
Inventors
- 👤 Chalmers K Bryce
- 👤 Peter R Aronson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:29
CPC Classifications
B; B21; B21K; B21K21/00; B21K21/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49348; Y10T29/496
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) | 1943-10-08 | 1944-04-08 | 1944-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-10-08 | 1948-04-08 | 1948-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-10-08 | 1952-04-08 | 1952-10-08 | $7700.00 | Window Closed / Lapsed |