US3434241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for surface-finishing metalwork
Assignee: WILLIAM B GREENBERG
•
Filing: 1966-11-03
•
Granted: 1969-03-25
•
Expires: 1986-11-03
Abstract
No abstract record available.
Inventors
- 👤 Elmer H Greenberg
- 👤 William B Greenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:18
CPC Classifications
B; B24; B24C; B24C3/00; B24C3/08; B24C3/10; B24C3/12; B24C3/02; B24C3/06; B24C3/062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3283450A
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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) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |