US2528992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toothbrush
Assignee: Individual
•
Filing: 1946-09-21
•
Granted: 1950-11-07
•
Expires: 1966-09-21
Abstract
No abstract record available.
Inventors
- 👤 Roy E Barr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:42
CPC Classifications
A; A46; A46B; A46B5/00; A46B5/0004; A46B5/0016; A46B5/0012; A46B9/00; A46B9/02; A46B9/04; A46B9/045; A46B2200/00; A46B2200/10; A46B2200/1066
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US569870A
Cited
CH17726A
Cited
US715263A
Cited
FR359325A
Cited
US887181A
Cited
US1025751A
Cited
US1118156A
Cited
US1189505A
Cited
FR588348A
Cited
GB247005A
Cited
US1679946A
Cited
US1707118A
Cited
US1722131A
Cited
AU2118435A
Cited
US2093383A
Cited
US2237694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |