US2898659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete form locking means
Assignee: SIMPLEX FORMS SYSTEM Inc
•
Filing: 1955-09-09
•
Granted: 1959-08-11
•
Expires: 1975-09-09
Abstract
No abstract record available.
Inventors
- 👤 James C Shoemaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:36
CPC Classifications
E; E04; E04G; E04G17/00; E04G17/04; E04G17/047; F; F16; F16B; F16B21/00; F16B21/10; F16B21/16; Y; Y10; Y10T; Y10T292/00; Y10T292/42; Y10T292/432
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-10 | 1963-02-09 | 1963-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-10 | 1967-02-09 | 1967-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-10 | 1971-02-09 | 1971-08-11 | $7700.00 | Window Closed / Lapsed |