US2900795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Raising and lowering apparatus
Assignee: California Research LLC
•
Filing: 1955-10-20
•
Granted: 1959-08-25
•
Expires: 1975-10-20
Abstract
No abstract record available.
Inventors
- 👤 Brandt Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:28
CPC Classifications
B; B63; B63B; B63B35/00; B63B35/04; G; G01; G01V; G01V1/00; G01V1/38; G01V1/3843
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) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |