US1658442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grain door
Assignee: Individual
•
Filing: 1926-05-03
•
Granted: 1928-02-07
•
Expires: 1946-05-03
Abstract
No abstract record available.
Inventors
- 👤 William W Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:05
CPC Classifications
B; B61; B61D; B61D19/00; B61D19/001; B61D19/002
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) | 1931-02-06 | 1931-08-08 | 1932-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-02-06 | 1935-08-08 | 1936-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-02-06 | 1939-08-08 | 1940-02-07 | $7700.00 | Window Closed / Lapsed |