US2940477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controller
Assignee: GARRETT OIL TOOLS Inc
•
Filing: 1955-10-03
•
Granted: 1960-06-14
•
Expires: 1975-10-03
Abstract
No abstract record available.
Inventors
- 👤 Norman F Brown
- 👤 Clifford M Peters
- 👤 Robert W Dinning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:00
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/48; E; E21; E21B; E21B43/00; E21B43/12; E21B43/121; E21B43/122; F04; F04B; F04B9/00; F04B9/08; F04B9/10; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86445; Y10T137/86453
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) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |