Patent US2670525A successfully refreshed from Google Patents.
US2810285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Faced wall construction
Assignee: Individual
•
Filing: 1955-02-08
•
Granted: 1957-10-22
•
Expires: 1975-02-08
Abstract
No abstract record available.
Inventors
- 👤 Williams Bill Dugan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:38
CPC Classifications
E; E04; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US337693A
Cited
GB190702378A
Cited
US1176080A
Cited
US2156277A
Cited
US2432445A
Cited
US2561095A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |