US3442224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor board support structure
Assignee: Pullman Standard Inc
•
Filing: 1966-12-23
•
Granted: 1969-05-06
•
Expires: 1986-12-23
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Rutkoski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:41
CPC Classifications
B; B61; B61D; B61D17/00; B61D17/04; B61D17/10; B61D45/00; B61D45/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3294354A
Cited
US3315617A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |