US2528868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyer gate
Assignee: SC Johnson and Son Inc
•
Filing: 1947-12-26
•
Granted: 1950-11-07
•
Expires: 1967-12-26
Abstract
No abstract record available.
Inventors
- 👤 Fred S Dederich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:34
CPC Classifications
B; B65; B65G; B65G47/00; B65G47/22; B65G47/26; B65G47/28; B65G47/29
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US9569A
Cited
US600373A
Cited
US2047406A
Cited
US939568A
Cited
US1529966A
Cited
US1532228A
Cited
US1750901A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |