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Patent US980341A successfully refreshed from Google Patents.
US980341A
Expired / Lapsed
US
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Coupling.
Assignee: C F Roper & Co
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Filing: 1909-08-04
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Granted: 1911-01-03
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Expires: 1929-08-04
Abstract
No abstract record available.
Inventors
- 👤 Walter F Roper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:30
CPC Classifications
F; F16; F16B; F16B31/00; F16B31/02; F16B31/021; E; E01; E01F; E01F9/00; E01F9/60; E01F9/623; E01F9/631; E01F9/635; F16B2200/00; F16B2200/50; F16B2200/506; F16B2200/63
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) | 1914-01-02 | 1914-07-04 | 1915-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-01-02 | 1918-07-04 | 1919-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-01-02 | 1922-07-04 | 1923-01-03 | $7700.00 | Window Closed / Lapsed |