Patent US3527336A successfully refreshed from Google Patents.
US3527336A
Expired / Lapsed
US
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Guide rail system
Assignee: Associated Millwrights Inc
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Filing: 1968-02-28
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Granted: 1970-09-08
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Expires: 1988-02-28
Abstract
No abstract record available.
Inventors
- 👤 Kenneth H Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:45
CPC Classifications
B; B65; B65G; B65G21/00; B65G21/20; B65G21/2045; B65G21/2063; B65G21/2072
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US635177A
Cited
US1012922A
Cited
US2951574A
Cited
US3292772A
Cited
US3313400A
Cited
US3412873A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-07 | 1974-03-09 | 1974-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-07 | 1978-03-09 | 1978-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-07 | 1982-03-09 | 1982-09-08 | $7700.00 | Window Closed / Lapsed |