US2850890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precast element and reinforced facing layer bonded thereto
Assignee: Individual
•
Filing: 1951-06-04
•
Granted: 1958-09-09
•
Expires: 1971-06-04
Abstract
No abstract record available.
Inventors
- 👤 Rubenstein David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:18
CPC Classifications
B; B28; B28B; B28B11/00; B28B11/04; E; E04; E04C; E04C1/00; E04C1/40; E04B; E04B2/00; E04B2/02; E04B2002/0256; E04B2002/0286; Y; Y10; Y10S; Y10S52/00; Y10S52/07; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/249942; Y10T428/249946; Y10T428/249953; Y10T428/249967; Y10T428/249968
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1844497A
Cited
US1817022A
Cited
US1953337A
Cited
US1955760A
Cited
US2052229A
Cited
US2115667A
Cited
US2193635A
Cited
GB542801A
Cited
US2294556A
Cited
US2372048A
Cited
US2425883A
Cited
US2455153A
Cited
US2414011A
Cited
GB561231A
Cited
US2460309A
Cited
US2413990A
Cited
US2392551A
Cited
US2394227A
Cited
GB582862A
Cited
US2513268A
Cited
US2571717A
Cited
US2477404A
Cited
US2752275A
Cited
US2751775A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |