Patent US987960A successfully refreshed from Google Patents.
US987960A
Expired / Lapsed
US
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Ladder.
Assignee: Individual
•
Filing: 1910-02-21
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Granted: 1911-03-28
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Expires: 1930-02-21
Abstract
No abstract record available.
Inventors
- 👤 Thomas Connors
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:48
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/42; E06C7/44
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) | 1914-03-27 | 1914-09-26 | 1915-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-03-27 | 1918-09-26 | 1919-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-03-27 | 1922-09-26 | 1923-03-28 | $7700.00 | Window Closed / Lapsed |