US2854726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete form structure for use in construction of concrete floors and the like
Assignee: Individual
•
Filing: 1955-05-11
•
Granted: 1958-10-07
•
Expires: 1975-05-11
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Stroud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:25
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/02; E; E04; E04G; E04G11/00; E04G11/36; E04G11/40; E04G11/46; Y; Y10; Y10S; Y10S425/00; Y10S425/107
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE368755C
Cited
US620495A
Cited
US1131479A
Cited
US1020164A
Cited
US1227769A
Cited
US1470729A
Cited
US1388273A
Cited
US1452983A
Cited
GB237438A
Cited
FR585657A
Cited
US1546586A
Cited
US1689151A
Cited
US1891557A
Cited
US2296782A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |