US2653000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tripod structure
Assignee: CADWELL Corp
•
Filing: 1948-12-17
•
Granted: 1953-09-22
•
Expires: 1968-12-17
Abstract
No abstract record available.
Inventors
- 👤 Clarence J Cadwell
- 👤 Frank M Adamson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:02
CPC Classifications
F; F16; F16M; F16M11/00; F16M11/02; F16M11/16; F16M11/20; F16M11/24; F16M11/242; F16M11/247; F16M13/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US563496A
Cited
US588552A
Cited
US821052A
Cited
GB470790A
Cited
US2204013A
Cited
US2297927A
Cited
US2440847A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |