US1887618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermophoric mixture
Assignee: THERMOPHOR Manufacturing Co Inc
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Filing: 1931-10-20
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Granted: 1932-11-15
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Expires: 1951-10-20
Abstract
No abstract record available.
Inventors
- 👤 Thomas P Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:28
CPC Classifications
A; A47; A47G; A47G23/00; A47G23/04; C; C09; C09K; C09K5/00; C09K5/02; C09K5/06; C09K5/063
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) | 1935-11-15 | 1936-05-16 | 1936-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-11-15 | 1940-05-16 | 1940-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-11-15 | 1944-05-16 | 1944-11-15 | $7700.00 | Window Closed / Lapsed |