US3399758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moving sidewalk
Assignee: TRINITY AIRPORT EQUIPMENT Inc A CORP OF
•
Filing: 1966-08-08
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Granted: 1968-09-03
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Expires: 1986-08-08
Abstract
No abstract record available.
Inventors
- 👤 Karr Willis Ford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:31
CPC Classifications
B; B66; B66B; B66B23/00; B66B23/02; B66B23/024; B65; B65G; B65G23/00; B65G23/02; B65G23/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1632569A
Cited
US756600A
Cited
US1191434A
Cited
FR724088A
Cited
US2227971A
Cited
US2627339A
Cited
CH381282A
Cited
GB1039010A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |