Patent US2480749A successfully refreshed from Google Patents.
US2926409A
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US
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Snap friction locking device
Assignee: Phillips Petroleum Co
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Filing: 1957-09-23
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Granted: 1960-03-01
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Expires: 1977-09-23
Abstract
No abstract record available.
Inventors
- 👤 Dan E Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:19
CPC Classifications
F; F16; F16B; F16B21/00; F16B21/06; F16B21/07; F16B21/078; Y; Y10; Y10T; Y10T24/00; Y10T24/45; Y10T24/45225; Y10T24/45602; Y10T24/45775; Y10T24/45874
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-01 | 1963-08-31 | 1964-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-01 | 1967-08-31 | 1968-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-01 | 1971-08-31 | 1972-03-01 | $7700.00 | Window Closed / Lapsed |