US2783548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary dryers
Assignee: Edw Renneburg & Sons Co
•
Filing: 1955-06-08
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Granted: 1957-03-05
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Expires: 1975-06-08
Abstract
No abstract record available.
Inventors
- 👤 Halldorsson Gisli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:33
CPC Classifications
F; F26; F26B; F26B11/00; F26B11/02; F26B11/04; F26B11/044
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-04 | 1960-09-03 | 1961-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-04 | 1964-09-03 | 1965-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-04 | 1968-09-03 | 1969-03-05 | $7700.00 | Window Closed / Lapsed |