US3485182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slidewalk apparatus and system
Assignee: Bae Automated Systems Inc
•
Filing: 1967-01-27
•
Granted: 1969-12-23
•
Expires: 1987-01-27
Abstract
No abstract record available.
Inventors
- 👤 Wyly Kenneth Crowder
- 👤 Thomas A Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:29
CPC Classifications
B; B66; B66B; B66B21/00; B66B21/10; B66B21/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US423871A
Cited
US1632569A
Cited
US1412896A
Cited
US1385584A
Cited
US1437549A
Cited
US3136266A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |