US3487945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Book trucks
Assignee: Individual
•
Filing: 1967-10-23
•
Granted: 1970-01-06
•
Expires: 1987-10-23
Abstract
No abstract record available.
Inventors
- 👤 Mary Lea Barham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:08
CPC Classifications
A; A47; A47B; A47B91/00; A47B91/06; A47B63/00; A47B31/00; A47B57/00; A47B57/58; A47B57/583; A47B57/585; A47B65/00; B; B62; B62B; B62B3/00; B62B3/002; B62B3/005; B62B3/006; A47B2031/003; B62B2202/00; B62B2202/64; B62B2203/00; B62B2203/44; B62B2205/00; B62B2205/30; B62B3/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1069477A
Cited
US1820888A
Cited
US2346150A
Cited
US2835546A
Cited
US2884295A
Cited
US3301407A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |