Patent US2511873A successfully refreshed from Google Patents.
US2511873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of constructing lift-type
Assignee: —
•
Filing: —
•
Granted: 1950-06-20
•
Expires: 1967-06-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:34
CPC Classifications
F; F17; F17B; F17B1/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49805; Y10T29/49826; Y10T29/49828; Y10T29/49863; Y10T29/49867; Y10T29/49869; Y10T29/49904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US386410A
Cited
US1068677A
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US1125070A
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US1839578A
Cited
US1883141A
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US2126997A
Cited
US2039602A
Cited
US2145469A
Cited
US2304354A
Cited
US2355874A
Cited
US2360222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-19 | 1953-12-19 | 1954-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-19 | 1957-12-19 | 1958-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-19 | 1961-12-19 | 1962-06-20 | $7700.00 | Window Closed / Lapsed |