US2086672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation screen for rotary kilns
Assignee: Individual
•
Filing: 1936-04-09
•
Granted: 1937-07-13
•
Expires: 1956-04-09
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Heyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:38
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/20; F27B7/2083; F27B7/02; F27B7/04; F27B2007/043; F27B7/14; F27B7/16; F27B7/167; F27B2007/168; F27D; F27D9/00; F27D2009/0002; F27D2009/001; F27D2009/0013
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) | 1940-07-12 | 1941-01-11 | 1941-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-07-12 | 1945-01-11 | 1945-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-07-12 | 1949-01-11 | 1949-07-13 | $7700.00 | Window Closed / Lapsed |