Patent US1573273A successfully refreshed from Google Patents.
Patent US1621310A successfully refreshed from Google Patents.
US1621310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid-feeding means for apparatus for preparing a moist cementitious mixture or mass
Assignee: HER BORN ENGINEERING AND Manufacturing C
•
Filing: 1924-06-18
•
Granted: 1927-03-15
•
Expires: 1944-06-18
Abstract
No abstract record available.
Inventors
- 👤 Otto E Bornhauser
- 👤 Herman John Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:36
CPC Classifications
B; B28; B28C; B28C7/00; B28C7/04; B28C7/12; B28C7/126
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1930-03-14 | 1930-09-13 | 1931-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-03-14 | 1934-09-13 | 1935-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-03-14 | 1938-09-13 | 1939-03-15 | $7700.00 | Window Closed / Lapsed |