US2683022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stairway banister
Assignee: ROBERT SPILLMAN
•
Filing: 1950-08-02
•
Granted: 1954-07-06
•
Expires: 1970-08-02
Abstract
No abstract record available.
Inventors
- 👤 Molow Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:57
CPC Classifications
E; E04; E04F; E04F11/00; E04F11/18; E04F2011/1885; E04F2011/1891; E04F2011/1893
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US303625A
Cited
US1012868A
Cited
US1058882A
Cited
US1380928A
Cited
US1401509A
Cited
US1536361A
Cited
US2427723A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-05 | 1958-01-04 | 1958-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-05 | 1962-01-04 | 1962-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-05 | 1966-01-04 | 1966-07-06 | $7700.00 | Window Closed / Lapsed |