US3448913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Work support,more particularly for household purposes
Assignee: Bremshey and Co
•
Filing: 1967-09-07
•
Granted: 1969-06-10
•
Expires: 1987-09-07
Abstract
No abstract record available.
Inventors
- 👤 Joachim Wolff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:12
CPC Classifications
A; A47; A47B; A47B96/00; A47B96/18; A47J; A47J47/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US818257A
Cited
US1222450A
Cited
US1873610A
Cited
US2248687A
Cited
US2542413A
Cited
US2593762A
Cited
US2710704A
Cited
US2844247A
Cited
US3165201A
Cited
US3362604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |