US3506243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prefabricated railing
Assignee: AMF Inc
•
Filing: 1968-11-26
•
Granted: 1970-04-14
•
Expires: 1988-11-26
Abstract
No abstract record available.
Inventors
- 👤 Lawrence Seiler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:50
CPC Classifications
E; E04; E04F; E04F11/00; E04F11/18; E04F11/181
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2655345A
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US3037593A
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US3113760A
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US3136395A
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US3143165A
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US3216170A
Cited
US3305221A
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US3349538A
Cited
US3343811A
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US3420505A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-13 | 1973-10-13 | 1974-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-13 | 1977-10-13 | 1978-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-13 | 1981-10-13 | 1982-04-14 | $7700.00 | Window Closed / Lapsed |