US2729914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marble runway
Assignee: Individual
•
Filing: 1952-08-18
•
Granted: 1956-01-10
•
Expires: 1972-08-18
Abstract
No abstract record available.
Inventors
- 👤 Cook Frances Elizabeth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:31
CPC Classifications
A; A63; A63F; A63F7/00; A63F7/22; A63F7/36; A63F7/3622
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US260815A
Cited
US334885A
Cited
US890104A
Cited
US1112243A
Cited
US1724447A
Cited
US1826215A
Cited
US1896607A
Cited
US2390442A
Cited
US2528250A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |