US3438336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overhead crane runway structures
Assignee: Individual
•
Filing: 1966-03-23
•
Granted: 1969-04-15
•
Expires: 1986-03-23
Abstract
No abstract record available.
Inventors
- 👤 Ernest Kalve
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:37
CPC Classifications
B; B66; B66C; B66C7/00; B66C2700/00; B66C2700/01; B66C2700/012; B66C2700/018
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US815377A
Cited
US961293A
Cited
US1019559A
Cited
US1103310A
Cited
US1740053A
Cited
US2630075A
Cited
US3092326A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |