Patent US2972157A successfully refreshed from Google Patents.
US2972157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Twisted stem tufted brush
Assignee: Osborn Manufacturing Corp
•
Filing: 1957-05-08
•
Granted: 1961-02-21
•
Expires: 1977-05-08
Abstract
No abstract record available.
Inventors
- 👤 Ruben O Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:25
CPC Classifications
A; A46; A46B; A46B3/00; A46B3/18; A46D; A46D3/00; A46D3/04; A46D3/05
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE13324C
Cited
DE13962C
Cited
US1034576A
Cited
US1206273A
Cited
GB195184A
Cited
FR615796A
Cited
GB409462A
Cited
US2465396A
Cited
US2580378A
Cited
US2895155A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-21 | 1964-08-22 | 1965-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-21 | 1968-08-22 | 1969-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-21 | 1972-08-22 | 1973-02-21 | $7700.00 | Window Closed / Lapsed |