US3018077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stair railing
Assignee: B W METAL WORKS Inc
•
Filing: 1959-08-11
•
Granted: 1962-01-23
•
Expires: 1979-08-11
Abstract
No abstract record available.
Inventors
- 👤 Albert E Buehler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:14
CPC Classifications
E; E04; E04F; E04F11/00; E04F11/18; E04F11/181; E04F11/1836; E04F11/1838
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US838266A
Cited
US1106279A
Cited
US2641429A
Cited
US2771262A
Cited
US2820613A
Cited
US2855184A
Cited
US2904314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-22 | 1965-07-24 | 1966-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-22 | 1969-07-24 | 1970-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-22 | 1973-07-24 | 1974-01-23 | $7700.00 | Window Closed / Lapsed |