US3089805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flue covering process
Assignee: Flintkote Co
•
Filing: 1955-09-12
•
Granted: 1963-05-14
•
Expires: 1975-09-12
Abstract
No abstract record available.
Inventors
- 👤 Jack H Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:38
CPC Classifications
B; B28; B28B; B28B1/00; B28B1/52; B28B19/00; B28B19/0038
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US339769A
Cited
US646289A
Cited
US1045459A
Cited
AT105167B
Cited
US1841807A
Cited
FR701797A
Cited
US2140773A
Cited
GB668063A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |