US2918151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-sustaining building unit and wall
Assignee: Individual
•
Filing: 1956-02-15
•
Granted: 1959-12-22
•
Expires: 1976-02-15
Abstract
No abstract record available.
Inventors
- 👤 Donald S Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:28
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/04; E04B9/0478; E04B1/00; E04B1/02; E04B1/08; E04B1/32; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/20; E04C2/22; E04B2001/327; E04B2001/3276; E04B2001/3288
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-21 | 1963-06-22 | 1963-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-21 | 1967-06-22 | 1967-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-21 | 1971-06-22 | 1971-12-22 | $7700.00 | Window Closed / Lapsed |