US152387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in screws for fastening stair-carpets
Assignee: —
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Filing: —
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Granted: 1874-06-23
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Expires: 1891-06-23
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:42
CPC Classifications
A; A47; A47G; A47G27/00; A47G27/06; A47G27/065; E; E02; E02D; E02D17/00; E02D17/02; E02D17/04; H; H03; H03H; H03H9/00; H03H9/02; H03H9/05; H03H9/0595
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) | 1877-06-22 | 1877-12-22 | 1878-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1881-06-22 | 1881-12-22 | 1882-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1885-06-22 | 1885-12-22 | 1886-06-23 | $7700.00 | Window Closed / Lapsed |