Patent US3429607A successfully refreshed from Google Patents.
US3429607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for erecting pre-cast concrete panels in a concrete wall structure
Assignee: Individual
•
Filing: 1967-10-03
•
Granted: 1969-02-25
•
Expires: 1987-10-03
Abstract
No abstract record available.
Inventors
- 👤 James L White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:36
CPC Classifications
E; E04; E04G; E04G21/00; E04G21/14; E04G21/142; E04B; E04B1/00; E04B1/38; E04B1/41; E04B1/4114; E04B1/4142
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |