Patent US2593468A successfully refreshed from Google Patents.
US2593468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grave marker
Assignee: Individual
•
Filing: 1949-10-28
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Granted: 1952-04-22
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Expires: 1969-10-28
Abstract
No abstract record available.
Inventors
- 👤 Oliver A Marsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:02
CPC Classifications
E; E04; E04H; E04H13/00; E04H13/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-22 | 1955-10-22 | 1956-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-22 | 1959-10-22 | 1960-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-22 | 1963-10-22 | 1964-04-22 | $7700.00 | Window Closed / Lapsed |