US2725993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Positioning device
Assignee: Individual
•
Filing: 1951-08-28
•
Granted: 1955-12-06
•
Expires: 1971-08-28
Abstract
No abstract record available.
Inventors
- 👤 Phillips P Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:27
CPC Classifications
G; G21; G21C; G21C19/00; G21C19/14; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US428749A
Cited
US1278307A
Cited
US1607269A
Cited
US1979507A
Cited
US2290568A
Cited
US2523025A
Cited
US2578760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-05 | 1959-06-06 | 1959-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-05 | 1963-06-06 | 1963-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-05 | 1967-06-06 | 1967-12-06 | $7700.00 | Window Closed / Lapsed |