US2675627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surveying apparatus
Assignee: Individual
•
Filing: 1951-08-28
•
Granted: 1954-04-20
•
Expires: 1971-08-28
Abstract
No abstract record available.
Inventors
- 👤 William H D Hinchman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:58
CPC Classifications
G; G01; G01C; G01C9/00; G01C9/02; G01C9/06; E; E21; E21B; E21B47/00; E21B47/02; E21B47/022; E21B47/0236
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1551393A
Cited
US1746562A
Cited
US1928970A
Cited
US2429620A
Cited
US2497594A
Cited
US2477574A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |