Patent US2831722A successfully refreshed from Google Patents.
US2831722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansible trailer
Assignee: PALACE Corp
•
Filing: 1954-03-09
•
Granted: 1958-04-22
•
Expires: 1974-03-09
Abstract
No abstract record available.
Inventors
- 👤 Frank D Hanson
- 👤 Clyde F Walt
- 👤 Donald F Cole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:12
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/32; B60P3/34; Y; Y10; Y10T; Y10T24/00; Y10T24/21; Y10T24/2102; Y10T24/2128; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18832; Y10T74/18848
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US559962A
Cited
US566127A
Cited
CA482243A
Cited
US862573A
Cited
US1154791A
Cited
US1964894A
Cited
GB376998A
Cited
US2167557A
Cited
US2395691A
Cited
US2512565A
Cited
US2739833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |