US2239410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means of producing heat by exothermic reaction
Assignee: Individual
•
Filing: 1939-10-11
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Granted: 1941-04-22
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Expires: 1959-10-11
Abstract
No abstract record available.
Inventors
- 👤 Bonat Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:07
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/16; A; A45; A45D; A45D7/00; A45D7/06; A45D7/065; A61; A61K; A61K8/00; A61K8/02; A61Q; A61Q5/00; A61Q5/04; F; F24; F24V; F24V30/00; A61K2800/00; A61K2800/20; A61K2800/24; A61K2800/242
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) | 1944-04-21 | 1944-10-21 | 1945-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-04-21 | 1948-10-21 | 1949-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-04-21 | 1952-10-21 | 1953-04-22 | $7700.00 | Window Closed / Lapsed |