US2887934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cement finishing machine
Assignee: Individual
•
Filing: 1956-04-06
•
Granted: 1959-05-26
•
Expires: 1976-04-06
Abstract
No abstract record available.
Inventors
- 👤 Marvin E Whiteman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:59
CPC Classifications
E; E04; E04F; E04F21/00; E04F21/20; E04F21/24; E04F21/245; E04F21/248
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US874549A
Cited
GB310736A
Cited
GB382892A
Cited
US2198929A
Cited
US2342445A
Cited
US2605683A
Cited
FR1092463A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |