Patent US2708972A successfully refreshed from Google Patents.
US2708972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device to locate and punch mark the intersection of two straight lines
Assignee: Individual
•
Filing: 1952-01-25
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Granted: 1955-05-24
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Expires: 1972-01-25
Abstract
No abstract record available.
Inventors
- 👤 Emmett E Park
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:26
CPC Classifications
B; B25; B25D; B25D5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-23 | 1958-11-22 | 1959-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-23 | 1962-11-22 | 1963-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-23 | 1966-11-22 | 1967-05-24 | $7700.00 | Window Closed / Lapsed |