US2404590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat concentrating nozzle protector for heating, cutting, and welding torches, and the like
Assignee: Individual
•
Filing: 1943-04-20
•
Granted: 1946-07-23
•
Expires: 1963-04-20
Abstract
No abstract record available.
Inventors
- 👤 Nantz Randolph Delbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:35
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/48; F23D14/52; F23D14/54; F23D14/38; F23D14/42
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) | 1949-07-22 | 1950-01-21 | 1950-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-07-22 | 1954-01-21 | 1954-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-07-22 | 1958-01-21 | 1958-07-23 | $7700.00 | Window Closed / Lapsed |