US2638637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building frame construction
Assignee: Individual
•
Filing: 1946-07-13
•
Granted: 1953-05-19
•
Expires: 1966-07-13
Abstract
No abstract record available.
Inventors
- 👤 Jr Ernest J Kump
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:03
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/38; E04C3/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US280884A
Cited
US675249A
Cited
FR376603A
Cited
FR21371E
Cited
GB151604A
Cited
US1622746A
Cited
US2283943A
Cited
US2323844A
Cited
US2365501A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |