US2536844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal scraper
Assignee: Individual
•
Filing: 1949-08-25
•
Granted: 1951-01-02
•
Expires: 1969-08-25
Abstract
No abstract record available.
Inventors
- 👤 Frederick Carlton
- 👤 Heflin Floyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:33
CPC Classifications
B; B44; B44D; B44D3/00; B44D3/16; B44D3/166; B44D3/168
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1610932A
Cited
GB322418A
Cited
US1881241A
Cited
US2033327A
Cited
GB540510A
Cited
US2263222A
Cited
US2297103A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |