US2965366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Kiln process having increased thermal efficiency
Assignee: Individual
•
Filing: 1957-08-09
•
Granted: 1960-12-20
•
Expires: 1977-08-09
Abstract
No abstract record available.
Inventors
- 👤 Richard F O'mara
- 👤 Robert G Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:49
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/20; F27B7/32; F27B7/3205; F27B2007/2008; F27B2007/3211; F27B2007/3217; F27B2007/3241; F27B7/38; F27B7/383; F27D; F27D3/00; F27D3/16; F27D2003/168; F27D2003/169
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1496913A
Cited
US1909820A
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US1977767A
Cited
US2218873A
Cited
FR898007A
Cited
US2621034A
Cited
US2653809A
Cited
FR1065274A
Cited
US2756981A
Cited
US2796249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |