Patent US186904A successfully refreshed from Google Patents.
US186904A
Expired / Lapsed
US
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Improvement in the manufacture of screw-threaded rods
Assignee: —
•
Filing: —
•
Granted: 1877-01-30
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Expires: 1894-01-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:47
CPC Classifications
B; B22; B22D; B22D5/00; B22D5/005; B21; B21D; B21D53/00; B21D53/44; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12229; Y10T428/12264; Y10T428/12271; Y10T428/12285; Y10T428/12389; Y10T428/12396
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) | 1880-01-30 | 1880-07-31 | 1881-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1884-01-30 | 1884-07-31 | 1885-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1888-01-30 | 1888-07-31 | 1889-01-30 | $7700.00 | Window Closed / Lapsed |