Patent US2802135A successfully refreshed from Google Patents.
Patent US3045759A successfully refreshed from Google Patents.
US3045759A
Expired / Lapsed
US
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Well apparatus
Assignee: Udell Inc
•
Filing: 1955-01-26
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Granted: 1962-07-24
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Expires: 1975-01-26
Abstract
No abstract record available.
Inventors
- 👤 Henry U Garrett
- 👤 Clifford M Peters
- 👤 Robert W Dinning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:26
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/12; E21B43/121; E21B43/122; E21B43/123; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/2934; Y10T137/7722; Y10T137/7781; Y10T137/7835; Y10T137/7836; Y10T137/7837; Y10T137/7854; Y10T137/7856
Claims Analysis
Total Claims: 0
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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) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |