Patent US2661967A successfully refreshed from Google Patents.
US2661967A
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Assignee: M B G Corp
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Filing: 1949-11-17
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Granted: 1953-12-08
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Expires: 1969-11-17
Abstract
No abstract record available.
Inventors
- 👤 Wallace F Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:47
CPC Classifications
F; F16; F16L; F16L29/00; F16J; F16J15/00; F16J15/16; F16J15/32; Y; Y10; Y10S; Y10S277/00; Y10S277/91; Y10S285/00; Y10S285/918; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87917; Y10T137/87925; Y10T137/87941; Y10T137/87949; Y10T137/87957
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2081040A
Cited
US2373443A
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US2437814A
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US2437586A
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US2485011A
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US2456356A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-07 | 1957-06-08 | 1957-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-07 | 1961-06-08 | 1961-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-07 | 1965-06-08 | 1965-12-08 | $7700.00 | Window Closed / Lapsed |