US2803328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable runway, skidboard and scaffold platform
Assignee: Individual
•
Filing: 1955-05-27
•
Granted: 1957-08-20
•
Expires: 1975-05-27
Abstract
No abstract record available.
Inventors
- 👤 Alva K Hinchman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:36
CPC Classifications
B; B65; B65G; B65G69/00; B65G69/28; B65G69/30; B63; B63B; B63B27/00; B63B27/14; B63B2027/141
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |