US2746154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sky lookout chair
Assignee: Individual
•
Filing: 1953-08-18
•
Granted: 1956-05-22
•
Expires: 1973-08-18
Abstract
No abstract record available.
Inventors
- 👤 Jr Donald A Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:05
CPC Classifications
A; A47; A47C; A47C15/00; A47C15/004; G; G01; G01C; G01C1/00; G01C1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US39742A
Cited
US129742A
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US550349A
Cited
US1716821A
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US1829614A
Cited
FR662734A
Cited
US1900567A
Cited
US2300561A
Cited
US2389852A
Cited
US2669784A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-22 | 1959-11-21 | 1960-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-22 | 1963-11-21 | 1964-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-22 | 1967-11-21 | 1968-05-22 | $7700.00 | Window Closed / Lapsed |