US2708358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building block
Assignee: Individual
•
Filing: 1951-12-10
•
Granted: 1955-05-17
•
Expires: 1971-12-10
Abstract
No abstract record available.
Inventors
- 👤 Carl K Schels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:05
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/02; E04B2/14; E04B2/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US826639A
Cited
US1334599A
Cited
GB154024A
Cited
US1419805A
Cited
US2205419A
Cited
US2315418A
Cited
US2459028A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-16 | 1958-11-15 | 1959-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-16 | 1962-11-15 | 1963-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-16 | 1966-11-15 | 1967-05-17 | $7700.00 | Window Closed / Lapsed |