US2484891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Post-mixed blowpipe and method of thermochemically cutting metal
Assignee: Union Carbide Corp
•
Filing: 1944-01-20
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Granted: 1949-10-18
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Expires: 1964-01-20
Abstract
No abstract record available.
Inventors
- 👤 Homer W Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:16
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/38; F23D14/42; Y; Y10; Y10S; Y10S266/00; Y10S266/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE299902C
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BE413190A
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DE300705C
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USRE16307E
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US1729677A
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FR617256A
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FR817708A
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GB494218A
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US2210402A
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US2373309A
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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) | 1952-10-17 | 1953-04-18 | 1953-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-17 | 1957-04-18 | 1957-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-17 | 1961-04-18 | 1961-10-18 | $7700.00 | Window Closed / Lapsed |