US2829709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxygen cutting nozzles
Assignee: Individual
•
Filing: 1956-01-11
•
Granted: 1958-04-08
•
Expires: 1976-01-11
Abstract
No abstract record available.
Inventors
- 👤 Alfred J Mathews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:15
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/48; F23D14/52; F23D14/54
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
FR569480A
Cited
US1597554A
Cited
US1987002A
Cited
US2136492A
Cited
DE676978C
Cited
US2126423A
Cited
US2378346A
Cited
US2380570A
Cited
US2392593A
Cited
US2468824A
Cited
US2622668A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |