US2455455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prefabricated concrete form
Assignee: Individual
•
Filing: 1946-12-12
•
Granted: 1948-12-07
•
Expires: 1966-12-12
Abstract
No abstract record available.
Inventors
- 👤 Paul B West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:41
CPC Classifications
E; E04; E04G; E04G9/00; E04G9/02; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44983; Y10T24/47
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US596010A
Cited
US1775234A
Cited
US2050256A
Cited
US2007689A
Cited
US2042438A
Cited
US2138683A
Cited
US2156027A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-07 | 1952-06-07 | 1952-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-07 | 1956-06-07 | 1956-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-07 | 1960-06-07 | 1960-12-07 | $7700.00 | Window Closed / Lapsed |