Patent US4543235A successfully refreshed from Google Patents.
Patent US2828869A successfully refreshed from Google Patents.
US2828869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hoist for building sections
Assignee: Individual
•
Filing: 1952-04-15
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Granted: 1958-04-01
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Expires: 1972-04-15
Abstract
No abstract record available.
Inventors
- 👤 Gale C Corley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:21
CPC Classifications
E; E04; E04G; E04G21/00; E04G21/14; E04G21/16; E04G21/167; E04G21/168
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2395411A
Cited
US1418510A
Cited
US1725329A
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US2305906A
Cited
US2337796A
Cited
US2364918A
Cited
US2465206A
Cited
US2443349A
Cited
US2523734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |