US2765498A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable and collapsible summer house
Assignee: Individual
•
Filing: 1954-11-18
•
Granted: 1956-10-09
•
Expires: 1974-11-18
Abstract
No abstract record available.
Inventors
- 👤 Leo C Kelnhofer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:32
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/343; E04B1/344; E04B1/3445; E04B1/345
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US378977A
Cited
US1082937A
Cited
FR485783A
Cited
US1291947A
Cited
US1881356A
Cited
US2319245A
Cited
US2461916A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-09 | 1960-04-09 | 1960-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-09 | 1964-04-09 | 1964-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-09 | 1968-04-09 | 1968-10-09 | $7700.00 | Window Closed / Lapsed |