US2307215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building structure
Assignee: Individual
•
Filing: 1942-03-03
•
Granted: 1943-01-05
•
Expires: 1962-03-03
Abstract
No abstract record available.
Inventors
- 👤 Russell C Graef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:10
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/18; E04B1/24; E04B2/00; E04B2/56; E04B2/58; E04C; E04C3/00; E04C3/38; E04C3/40; E04B1/2403; E04B2001/2451; E04B2001/2457; E04B2001/2463; E04B2001/2481; E04B2001/2487; E04B2001/2496
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-01-04 | 1946-07-06 | 1947-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-01-04 | 1950-07-06 | 1951-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-01-04 | 1954-07-06 | 1955-01-05 | $7700.00 | Window Closed / Lapsed |