US2829928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wall board jack dolly
Assignee: Individual
•
Filing: 1956-03-16
•
Granted: 1958-04-08
•
Expires: 1976-03-16
Abstract
No abstract record available.
Inventors
- 👤 Robert M Callaway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:03
CPC Classifications
E; E04; E04F; E04F21/00; E04F21/18; E04F21/1805; E04F21/1827
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US78302A
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US399220A
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US682932A
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US740398A
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US813830A
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US1357185A
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US1546698A
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US2465206A
Cited
US2468230A
Cited
US2443349A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |