Patent US3369753A successfully refreshed from Google Patents.
US3369753A
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US
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Pads for supporting rails
Assignee: Swedish Rail System AB SRS
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Filing: 1966-09-02
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Granted: 1968-02-20
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Expires: 1986-09-02
Abstract
No abstract record available.
Inventors
- 👤 Olson Per Erik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:42
CPC Classifications
G; G02; G02C; G02C5/00; G02C5/12; E; E01; E01B; E01B9/00; E01B9/68; E01B9/685; G02C5/02; A; A63; A63B; A63B71/00; A63B71/08; A63B71/10; E01B9/686; E01B9/688
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2146341A
Cited
US2094279A
Cited
GB468182A
Cited
GB678731A
Cited
US2996256A
Cited
DE933342C
Cited
GB797889A
Cited
GB938328A
Cited
US3189279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |