US1959286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of storing and using heat and means therefor
Assignee: Dow Chemical Co
•
Filing: 1930-07-07
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Granted: 1934-05-15
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Expires: 1950-07-07
Abstract
No abstract record available.
Inventors
- 👤 John J Grebe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:48
CPC Classifications
F; F28; F28D; F28D20/00; F28D20/0056; C; C09; C09K; C09K5/00; C09K5/02; C09K5/06; C09K5/063; F01; F01K; F01K1/00; Y; Y02; Y02E; Y02E60/00; Y02E60/14
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) | 1937-05-14 | 1937-11-13 | 1938-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-05-14 | 1941-11-13 | 1942-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-05-14 | 1945-11-13 | 1946-05-15 | $7700.00 | Window Closed / Lapsed |