Patent US2902744A successfully refreshed from Google Patents.
US2902744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete form appliance
Assignee: Individual
•
Filing: 1954-04-28
•
Granted: 1959-09-08
•
Expires: 1974-04-28
Abstract
No abstract record available.
Inventors
- 👤 George H Patterson
- 👤 Daniel J Reddien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:35
CPC Classifications
E; E04; E04G; E04G17/00; E04G17/06; E04G17/07; E04G17/0707; E04G17/0721; Y; Y10; Y10S; Y10S425/00; Y10S425/129
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US566544A
Cited
US1875366A
Cited
US1705898A
Cited
US1629899A
Cited
US1960502A
Cited
US2133574A
Cited
US2217278A
Cited
US2273198A
Cited
US2323705A
Cited
US2452203A
Cited
GB666476A
Cited
US2628050A
Cited
US2644219A
Cited
US2711002A
Cited
US2782484A
Cited
US2819861A
Cited
US2805833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |