US2880031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tile laying device
Assignee: Individual
•
Filing: 1956-06-08
•
Granted: 1959-03-31
•
Expires: 1976-06-08
Abstract
No abstract record available.
Inventors
- 👤 Ralph H Dark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:11
CPC Classifications
F; F16; F16L; F16L1/00; F16L1/024; F16L1/028; F16L1/036
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US905010A
Cited
US1260685A
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US1877974A
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US2429193A
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US2520815A
Cited
US2507368A
Cited
US2571832A
Cited
US2597760A
Cited
US2706060A
Cited
US2692159A
Cited
US2718426A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |