Patent US1361821A successfully refreshed from Google Patents.
US1361821A
Expired / Lapsed
US
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Conveyer-chain
Assignee: Jeffrey Manufacturing Co
•
Filing: 1916-11-21
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Granted: 1920-12-14
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Expires: 1936-11-21
Abstract
No abstract record available.
Inventors
- 👤 Robert E Briggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:51
CPC Classifications
B; B65; B65G; B65G39/00; B65G39/10; B65G39/20
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) | 1923-12-14 | 1924-06-14 | 1924-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-12-14 | 1928-06-14 | 1928-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-12-14 | 1932-06-14 | 1932-12-14 | $7700.00 | Window Closed / Lapsed |