US2836214A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic screw anchor with slotted head
Assignee: Illinois Tool Works Inc
•
Filing: 1953-07-31
•
Granted: 1958-05-27
•
Expires: 1973-07-31
Abstract
No abstract record available.
Inventors
- 👤 George M Rapata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:43
CPC Classifications
F; F16; F16B; F16B12/00; F16B12/10; F16B12/28; F16B12/30; F16B37/00; F16B37/04; F16B37/041; F16B37/043; Y; Y10; Y10S; Y10S411/00; Y10S411/913
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE22618E
Cited
CA478514A
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US2088955A
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US2150080A
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US2259720A
Cited
GB556544A
Cited
GB589648A
Cited
US2393606A
Cited
US2545514A
Cited
US2657894A
Cited
US2788047A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-26 | 1961-11-25 | 1962-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-26 | 1965-11-25 | 1966-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-26 | 1969-11-25 | 1970-05-27 | $7700.00 | Window Closed / Lapsed |