US2878004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary furnace installations and method of processing charges therein
Assignee: Individual
•
Filing: 1955-06-21
•
Granted: 1959-03-17
•
Expires: 1975-06-21
Abstract
No abstract record available.
Inventors
- 👤 Walter C Saeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:04
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/20; F27B7/2075; F27B7/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US936981A
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CA175156A
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US1527729A
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US1699612A
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US2232834A
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US2368270A
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US2606111A
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US2663921A
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US2793018A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |