US2949424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clathrates
Assignee: Westinghouse Electric Corp
•
Filing: 1956-09-17
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Granted: 1960-08-16
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Expires: 1976-09-17
Abstract
No abstract record available.
Inventors
- 👤 Mandelcorn Lyon
- 👤 Robert W Auxier
- 👤 Charles W Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:09
CPC Classifications
C; C01; C01B; C01B19/00; C01B19/005; C01B17/00; C01B17/45; C01B17/4507; C01B17/4515; C01B17/453; C01P; C01P2002/00; C01P2002/08; H; H01; H01H; H01H33/00; H01H33/70; H01H33/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-16 | 1964-02-15 | 1964-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-16 | 1968-02-15 | 1968-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-16 | 1972-02-15 | 1972-08-16 | $7700.00 | Window Closed / Lapsed |