Patent US2846259A successfully refreshed from Google Patents.
US2846259A
Expired / Lapsed
US
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Manhole cover lifter
Assignee: PETER J FEYKERT
•
Filing: 1954-02-05
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Granted: 1958-08-05
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Expires: 1974-02-05
Abstract
No abstract record available.
Inventors
- 👤 Ernest N Sadler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:53
CPC Classifications
B; B66; B66F; B66F15/00; B65; B65G; B65G7/00; B65G7/12; B66F19/00; B66F19/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US389856A
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US559669A
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US747079A
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US763249A
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US907034A
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US1096378A
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US1369976A
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US1528149A
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US2706131A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |