US3048381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft kiln with orifice controlled combustion
Assignee: Individual
•
Filing: 1960-11-10
•
Granted: 1962-08-07
•
Expires: 1980-11-10
Abstract
No abstract record available.
Inventors
- 👤 Bolton L Corson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:01
CPC Classifications
C; C04; C04B; C04B2/00; C04B2/10; C04B2/12; F; F23; F23D; F23D14/00
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) | 1965-08-06 | 1966-02-05 | 1966-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-06 | 1970-02-05 | 1970-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-06 | 1974-02-05 | 1974-08-07 | $7700.00 | Window Closed / Lapsed |