Patent US3005264A successfully refreshed from Google Patents.
US3005264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Depth register
Assignee: Individual
•
Filing: 1958-07-28
•
Granted: 1961-10-24
•
Expires: 1978-07-28
Abstract
No abstract record available.
Inventors
- 👤 Charles S Shaffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:23
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2076246A
Cited
US1617662A
Cited
US1870362A
Cited
US1993877A
Cited
US1863007A
Cited
US2166212A
Cited
US2539758A
Cited
US2535826A
Cited
US2881527A
Cited
US2846769A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-23 | 1965-04-24 | 1965-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-23 | 1969-04-24 | 1969-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-23 | 1973-04-24 | 1973-10-24 | $7700.00 | Window Closed / Lapsed |