US1792987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete-column clamp
Assignee: Individual
•
Filing: 1930-04-01
•
Granted: 1931-02-17
•
Expires: 1950-04-01
Abstract
No abstract record available.
Inventors
- 👤 John A Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:56
CPC Classifications
E; E04; E04G; E04G13/00; E04G13/02; E04G13/023; E04G13/025
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) | 1934-02-16 | 1934-08-18 | 1935-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-02-16 | 1938-08-18 | 1939-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-02-16 | 1942-08-18 | 1943-02-17 | $7700.00 | Window Closed / Lapsed |