Patent US3877116A successfully refreshed from Google Patents.
Patent US1216430A successfully refreshed from Google Patents.
US1216430A
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Draw-bar yoke.
Assignee: RAILWAY PRODUCTS CORP
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Filing: 1916-05-26
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Granted: 1917-02-20
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Expires: 1936-05-26
Abstract
No abstract record available.
Inventors
- 👤 William D Forsyth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:34
CPC Classifications
B; B21; B21J; B21J15/00; B21J15/10; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49893; Y10T29/49947; Y10T29/49954; Y10T29/49956; Y10T428/00; Y10T428/12; Y10T428/12229; Y10T428/12236; Y10T428/1225; Y10T428/12257; Y10T428/12264; Y10T428/12271; Y10T428/12278
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) | 1920-02-20 | 1920-08-21 | 1921-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-02-20 | 1924-08-21 | 1925-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-02-20 | 1928-08-21 | 1929-02-20 | $7700.00 | Window Closed / Lapsed |