US3480260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for mixing a mass of concrete or other material
Assignee: Individual
•
Filing: 1967-11-06
•
Granted: 1969-11-25
•
Expires: 1987-11-06
Abstract
No abstract record available.
Inventors
- 👤 Erik Valdemar Fejmert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:13
CPC Classifications
B; B28; B28C; B28C5/00; B28C5/46; B28C5/466; B28C5/08; B28C5/10; B28C5/12; B28C5/16; B28C5/163; B28C7/00; B28C7/04; B28C7/12; B28C7/126
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |