US3048244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interlocking wall system
Assignee: BUFLER Manufacturing CORP
•
Filing: 1957-04-10
•
Granted: 1962-08-07
•
Expires: 1977-04-10
Abstract
No abstract record available.
Inventors
- 👤 William R Callahan
- 👤 Charles M Ragsdale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:50
CPC Classifications
E; E04; E04H; E04H5/00; E04H5/10; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; E04B1/78; E04B1/80; E04B1/38; E04B1/61; E04B1/6108; E04B1/612; E04B1/6179
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US825304A
Cited
US1810287A
Cited
US2069176A
Cited
GB600772A
Cited
US2416240A
Cited
US2644552A
Cited
US2691433A
Cited
GB715770A
Cited
US2659461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-06 | 1966-02-05 | 1966-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-06 | 1970-02-05 | 1970-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-06 | 1974-02-05 | 1974-08-07 | $7700.00 | Window Closed / Lapsed |