US2936015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw anchor with attached spacing sleeve
Assignee: Illinois Tool Works Inc
•
Filing: 1957-03-19
•
Granted: 1960-05-10
•
Expires: 1977-03-19
Abstract
No abstract record available.
Inventors
- 👤 George M Rapata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:03
CPC Classifications
F; F16; F16B; F16B37/00; F16B5/00; F16B5/02; F16B5/0216; F16B5/0233; Y; Y10; Y10S; Y10S411/00; Y10S411/913
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US980355A
Cited
US1907120A
Cited
US2353248A
Cited
US2542144A
Cited
US2545514A
Cited
US2675732A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-10 | 1963-11-09 | 1964-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-10 | 1967-11-09 | 1968-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-10 | 1971-11-09 | 1972-05-10 | $7700.00 | Window Closed / Lapsed |