US2720135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expanding screw anchor
Assignee: Individual
•
Filing: 1953-05-07
•
Granted: 1955-10-11
•
Expires: 1973-05-07
Abstract
No abstract record available.
Inventors
- 👤 Gisondi Emanuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:46
CPC Classifications
F; F16; F16B; F16B13/00; F16B13/12; F16B13/122; F16B13/02; F16B13/025; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/965; Y10S411/967
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2208779A
Cited
GB535367A
Cited
US2244975A
Cited
US2337267A
Cited
US2369962A
Cited
US2386732A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-10 | 1959-04-11 | 1959-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-10 | 1963-04-11 | 1963-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-10 | 1967-04-11 | 1967-10-11 | $7700.00 | Window Closed / Lapsed |