Patent US2456784A successfully refreshed from Google Patents.
US2456784A
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Blowpipe apparatus
Assignee: Union Carbide Corp
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Filing: 1944-03-09
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Granted: 1948-12-21
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Expires: 1964-03-09
Abstract
No abstract record available.
Inventors
- 👤 Homer W Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:01
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/48; F23D14/52; F23D14/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE217021C
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US1310101A
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DE402400C
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US1371309A
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US1373043A
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FR582889A
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US2266834A
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CH181091A
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US2178451A
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US2356196A
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US2337087A
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US2348774A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-21 | 1952-06-21 | 1952-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-21 | 1956-06-21 | 1956-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-21 | 1960-06-21 | 1960-12-21 | $7700.00 | Window Closed / Lapsed |