Patent US3500768A successfully refreshed from Google Patents.
US3500768A
Expired / Lapsed
US
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Reversible lower bookcase base frame
Assignee: ALMA DESK Co
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Filing: 1968-02-27
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Granted: 1970-03-17
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Expires: 1988-02-27
Abstract
No abstract record available.
Inventors
- 👤 William C Lowe Jr
- 👤 Francis H Asbury
- 👤 Jesse E Milliken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:28
CPC Classifications
A; A47; A47B; A47B65/00; A47B57/00; A47B57/06; A47B57/08; A47B57/10; A47B63/00; A47B57/04
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) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |