US1206906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Folding scaling-ladder.
Assignee: AT&T Inc
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Filing: 1916-05-10
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Granted: 1916-12-05
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Expires: 1936-05-10
Abstract
No abstract record available.
Inventors
- 👤 Frans Persson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:04
CPC Classifications
E; E06; E06C; E06C1/00; E06C1/02; E06C1/38; E06C1/381
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) | 1919-12-05 | 1920-06-05 | 1920-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1923-12-05 | 1924-06-05 | 1924-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1927-12-05 | 1928-06-05 | 1928-12-05 | $7700.00 | Window Closed / Lapsed |