US2574037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Buffing wheel
Assignee: Individual
•
Filing: 1947-01-10
•
Granted: 1951-11-06
•
Expires: 1967-01-10
Abstract
No abstract record available.
Inventors
- 👤 Fritz E Hendrickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:09
CPC Classifications
B; B24; B24D; B24D13/00; B24D13/02; B24D13/04; B24D13/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US616184A
Cited
USRE15226E
Cited
AT84786B
Cited
US1515818A
Cited
US1820465A
Cited
US1946630A
Cited
US2280399A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-05 | 1955-05-07 | 1955-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-05 | 1959-05-07 | 1959-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-05 | 1963-05-07 | 1963-11-06 | $7700.00 | Window Closed / Lapsed |