Patent US3139642A successfully refreshed from Google Patents.
US3139642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Twisted tuft rotary brush
Assignee: Osborn Manufacturing Corp
•
Filing: 1961-05-03
•
Granted: 1964-07-07
•
Expires: 1981-05-03
Abstract
No abstract record available.
Inventors
- 👤 Brooks E Nelson
- 👤 Willard A Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:00
CPC Classifications
A; A46; A46B; A46B13/00; A46B13/001; A46B13/003
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
19 words
A TWISTED TUFT ROTARY BRUSH COMPRISING A RING, A SERIES OF LOOPED TWISTED TUFTS THREADED ON SAID RING, AND
References Cited (Backward Citations)
US553402A
Cited
US2732577A
Cited
US909204A
Cited
US955738A
Cited
US1920667A
Cited
US2409309A
Cited
US2740148A
Cited
US2757400A
Cited
US2789302A
Cited
GB789508A
Cited
US2929086A
Cited
US2963730A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |