US3501879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prefabricated floor
Assignee: Gramall Industries Pty Ltd
•
Filing: 1968-05-06
•
Granted: 1970-03-24
•
Expires: 1988-05-06
Abstract
No abstract record available.
Inventors
- 👤 Graham George Mitchell
- 👤 Ronald John Roach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:09
CPC Classifications
A; A47; A47K; A47K3/00; A47K3/28; A47K3/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1739664A
Cited
US2282329A
Cited
US2484240A
Cited
US2993212A
Cited
US3363267A
Cited
US3382635A
Cited
US3380205A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-23 | 1973-09-22 | 1974-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-23 | 1977-09-22 | 1978-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-23 | 1981-09-22 | 1982-03-24 | $7700.00 | Window Closed / Lapsed |