US1943589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for backfilling and the like
Assignee: CEMENT GUN Co
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Filing: 1933-08-26
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Granted: 1934-01-16
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Expires: 1953-08-26
Abstract
No abstract record available.
Inventors
- 👤 Domina Georg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:10
CPC Classifications
E; E21; E21F; E21F15/00; E21F15/08; E21F15/10
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) | 1937-01-15 | 1937-07-17 | 1938-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-01-15 | 1941-07-17 | 1942-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-01-15 | 1945-07-17 | 1946-01-16 | $7700.00 | Window Closed / Lapsed |