US2984944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building arch construction
Assignee: ROSECRANS DEV Co
•
Filing: 1954-08-02
•
Granted: 1961-05-23
•
Expires: 1974-08-02
Abstract
No abstract record available.
Inventors
- 👤 Sapp Maxwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:35
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/38; E04C3/44; E04B; E04B7/00; E04B7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR958819A
Cited
US1761306A
Cited
US1952887A
Cited
US1968096A
Cited
US1983874A
Cited
GB494627A
Cited
US2214049A
Cited
FR866217A
Cited
US2287370A
Cited
US2525974A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |