US2952373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manhole cover lifter
Assignee: WESTERN PROGRESS MANUFACTURERS
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Filing: 1957-07-29
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Granted: 1960-09-13
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Expires: 1977-07-29
Abstract
No abstract record available.
Inventors
- 👤 Edward L Bie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:52
CPC Classifications
B; B66; B66F; B66F19/00; B66F19/005; B62; B62B; B62B1/00; B62B1/10; B62B1/14; B62B2202/00; B62B2202/62; B62B2203/00; B62B2203/02
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) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |