US2657449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tie rod for concrete wall forms
Assignee: Superior Concrete Accessories Inc
•
Filing: 1949-03-02
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Granted: 1953-11-03
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Expires: 1969-03-02
Abstract
No abstract record available.
Inventors
- 👤 Hillberg Bror
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:04
CPC Classifications
E; E04; E04G; E04G17/00; E04G17/06; E04G17/07; E04G17/0707; E04G17/0721; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49623; Y10T29/49632; Y10T29/49789; Y10T29/4979; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49927; Y10T29/49929; Y10T29/49934
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1713410A
Cited
US2095714A
Cited
US2020912A
Cited
US2209673A
Cited
US2193078A
Cited
US2358975A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |