US2101074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building system and construction units and elements therefor
Assignee: FER O CON CORP
•
Filing: 1935-04-22
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Granted: 1937-12-07
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Expires: 1955-04-22
Abstract
No abstract record available.
Inventors
- 👤 Guy F Kotrbaty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:35
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/30; E04C3/32; E04B; E04B2/00; E04B2/56; E04B2/58; E04B2/60; E04B2/74; E04B2/7401; E04B1/00; E04B1/38; E04B1/61; E04B1/6108; E04B1/612; E04B1/6145; E04B1/6158; E04B2/72; E04B2/723; E04B2002/725
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) | 1940-12-06 | 1941-06-07 | 1941-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-12-06 | 1945-06-07 | 1945-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-12-06 | 1949-06-07 | 1949-12-07 | $7700.00 | Window Closed / Lapsed |