Patent US2779964A successfully refreshed from Google Patents.
US2779964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotatable polisher member
Assignee: BIRTMAN ELECTRIC Co
•
Filing: 1953-03-19
•
Granted: 1957-02-05
•
Expires: 1973-03-19
Abstract
No abstract record available.
Inventors
- 👤 Philip J More
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:39
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4036; A47L11/4041; A47L11/02; A47L11/10; A47L11/14; A47L11/18; A47L11/19
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE559229C
Cited
US869572A
Cited
US906035A
Cited
US1198407A
Cited
GB110971A
Cited
US1518143A
Cited
US1849497A
Cited
US1945274A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-05 | 1960-08-06 | 1961-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-05 | 1964-08-06 | 1965-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-05 | 1968-08-06 | 1969-02-05 | $7700.00 | Window Closed / Lapsed |