Patent US2440053A successfully refreshed from Google Patents.
US2440053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor tile and joist construction
Assignee: Individual
•
Filing: 1945-05-29
•
Granted: 1948-04-20
•
Expires: 1965-05-29
Abstract
No abstract record available.
Inventors
- 👤 Macomber Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:37
CPC Classifications
E; E04; E04B; E04B5/00; E04B5/02; E04B5/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US337829A
Cited
US384421A
Cited
FR743672A
Cited
US717923A
Cited
US947590A
Cited
FR403421A
Cited
US1013537A
Cited
GB191314596A
Cited
US1226788A
Cited
US1620293A
Cited
US1863257A
Cited
US1779346A
Cited
US1879295A
Cited
US1955948A
Cited
DE562061C
Cited
US1999819A
Cited
US2055760A
Cited
US2061103A
Cited
US2149026A
Cited
US2147965A
Cited
US2256812A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-20 | 1951-10-20 | 1952-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-20 | 1955-10-20 | 1956-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-20 | 1959-10-20 | 1960-04-20 | $7700.00 | Window Closed / Lapsed |