US2819792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansion wall fastener unit
Assignee: Individual
•
Filing: 1956-07-09
•
Granted: 1958-01-14
•
Expires: 1976-07-09
Abstract
No abstract record available.
Inventors
- 👤 Joseph M Margulis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:15
CPC Classifications
B; B65; B65D; B65D71/00; B65D2571/00; B65D2571/00006; B65D2571/00012; B65D2571/00123; B65D2571/00648; B65D2571/00672; B65D2571/00833; B65D2571/00925; Y; Y10; Y10S; Y10S206/00; Y10S206/82
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |