Patent US2052217A successfully refreshed from Google Patents.
US2052217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
All weather stadium
Assignee: Individual
•
Filing: 1933-06-20
•
Granted: 1936-08-25
•
Expires: 1953-06-20
Abstract
No abstract record available.
Inventors
- 👤 Sibour Jules H De
- 👤 George P Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:48
CPC Classifications
E; E04; E04B; E04B7/00; E04B7/16; E04B7/166; E04H; E04H3/00; E04H3/10; E04H3/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1939-08-25 | 1940-02-24 | 1940-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-08-25 | 1944-02-24 | 1944-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-08-25 | 1948-02-24 | 1948-08-25 | $7700.00 | Window Closed / Lapsed |