US2887849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum control lifting apparatus
Assignee: VAC U LIFT Co
•
Filing: 1957-03-22
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Granted: 1959-05-26
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Expires: 1977-03-22
Abstract
No abstract record available.
Inventors
- 👤 George F Lytle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:35
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/02; B66C1/0212; B66C1/0256; B66C1/0293
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1244686A
Cited
US1403290A
Cited
US2323519A
Cited
US2619237A
Cited
US2773353A
Cited
US2812061A
Cited
US2815240A
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 |