Patent US3043577A successfully refreshed from Google Patents.
US3043577A
Expired / Lapsed
US
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Lance with conduits for mixing gases located interiorly
Assignee: Individual
•
Filing: 1960-10-20
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Granted: 1962-07-10
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Expires: 1980-10-20
Abstract
No abstract record available.
Inventors
- 👤 Walter V Berry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:47
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/46; C21C5/4606; F; F23; F23D; F23D14/00; F23D14/32; F27; F27D; F27D3/00; F27D3/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-09 | 1966-01-08 | 1966-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-09 | 1970-01-08 | 1970-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-09 | 1974-01-08 | 1974-07-10 | $7700.00 | Window Closed / Lapsed |