Patent US234931A successfully refreshed from Google Patents.
Patent US737080A successfully refreshed from Google Patents.
US737080A
Expired / Lapsed
US
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Hinged ladder.
Assignee: GUSTAVE A MILLER
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Filing: 1903-03-25
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Granted: 1903-08-25
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Expires: 1923-03-25
Abstract
No abstract record available.
Inventors
- 👤 Abner F Conner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:49
CPC Classifications
E; E06; E06C; E06C1/00; E06C1/02; E06C1/32; E06C1/38; E06C1/39
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1906-08-24 | 1907-02-23 | 1907-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1910-08-24 | 1911-02-23 | 1911-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1914-08-24 | 1915-02-23 | 1915-08-25 | $7700.00 | Window Closed / Lapsed |