Patent US2969220A successfully refreshed from Google Patents.
US2969220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for elevating and aligning building material
Assignee: Individual
•
Filing: 1957-11-18
•
Granted: 1961-01-24
•
Expires: 1977-11-18
Abstract
No abstract record available.
Inventors
- 👤 Herbert D Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:31
CPC Classifications
E; E04; E04F; E04F21/00; E04F21/18; E04F21/1805; E04F21/1811
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1685144A
Cited
US2490166A
Cited
US2634875A
Cited
US2672319A
Cited
US2765201A
Cited
US2872252A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-24 | 1964-07-25 | 1965-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-24 | 1968-07-25 | 1969-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-24 | 1972-07-25 | 1973-01-24 | $7700.00 | Window Closed / Lapsed |