US2503733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable stilt step
Assignee: Individual
•
Filing: 1947-07-03
•
Granted: 1950-04-11
•
Expires: 1967-07-03
Abstract
No abstract record available.
Inventors
- 👤 Heller Maximilian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:38
CPC Classifications
A; A63; A63B; A63B25/00; A63B2208/00; A63B2208/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US120952A
Cited
US218457A
Cited
US356366A
Cited
US450357A
Cited
US1427030A
Cited
US2057013A
Cited
GB457587A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-10 | 1953-10-10 | 1954-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-10 | 1957-10-10 | 1958-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-10 | 1961-10-10 | 1962-04-11 | $7700.00 | Window Closed / Lapsed |