Patent US2674288A successfully refreshed from Google Patents.
US2674288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portfolio for supporting calendars in extended position
Assignee: Individual
•
Filing: 1950-12-26
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Granted: 1954-04-06
•
Expires: 1970-12-26
Abstract
No abstract record available.
Inventors
- 👤 Howard G Laidlaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:07
CPC Classifications
A; A45; A45C; A45C3/00; A45C3/02; Y; Y10; Y10S; Y10S190/00; Y10S190/90; Y10S190/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US830396A
Cited
US1266091A
Cited
US1914087A
Cited
US2011879A
Cited
US2086895A
Cited
US2053630A
Cited
US2261291A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |