US2900975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submerged heating apparatus
Assignee: International Minerals and Chemical Corp
•
Filing: 1955-10-13
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Granted: 1959-08-25
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Expires: 1975-10-13
Abstract
No abstract record available.
Inventors
- 👤 Northcott Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:01
CPC Classifications
F; F23; F23C; F23C3/00; F23C3/004; B; B01; B01D; B01D1/00; B01D1/14; C; C01; C01B; C01B25/00; C01B25/16; C01B25/18; C01B25/234; C01B25/2343; C01B25/2346; F22; F22B; F22B1/00; F22B1/22; F22B1/26; F22B1/265
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1769833A
Cited
US2231445A
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US2538412A
Cited
US2594433A
Cited
AT171908B
Cited
US2781756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |