US2844882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic leveling mechanism for concrete slab laying machines
Assignee: Guntert and Zimmerman Construction Div Inc
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Filing: 1955-10-17
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Granted: 1958-07-29
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Expires: 1975-10-17
Abstract
No abstract record available.
Inventors
- 👤 Earley Wilbur
- 👤 Robert L Puckett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:48
CPC Classifications
B; B62; B62D; B62D55/00; B62D55/08; B62D55/104; B62D55/116; E; E01; E01C; E01C19/00; E01C19/48; E01C19/4866; Y; Y10; Y10S; Y10S37/00; Y10S37/907
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |