US1632784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-conducting apparatus
Assignee: Individual
•
Filing: 1919-03-24
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Granted: 1927-06-21
•
Expires: 1939-03-24
Abstract
No abstract record available.
Inventors
- 👤 Robert S Blair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:54
CPC Classifications
B; B01; B01D; B01D5/00; B01D5/0003; B01D5/0006; F; F28; F28D; F28D7/00; F28D7/02; F28D7/024; F28F; F28F1/00; F28F1/08
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) | 1930-06-20 | 1930-12-20 | 1931-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-06-20 | 1934-12-20 | 1935-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-06-20 | 1938-12-20 | 1939-06-21 | $7700.00 | Window Closed / Lapsed |