US2690788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable support
Assignee: Individual
•
Filing: 1949-04-19
•
Granted: 1954-10-05
•
Expires: 1969-04-19
Abstract
No abstract record available.
Inventors
- 👤 Ames Butler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:13
CPC Classifications
A; A61; A61H; A61H3/00; A61H3/04; A61H2003/043; A61H2003/046; Y; Y10; Y10S; Y10S297/00; Y10S297/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US205002A
Cited
US244570A
Cited
US531330A
Cited
US2102336A
Cited
US2236089A
Cited
US2282689A
Cited
US2312602A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-04 | 1958-04-05 | 1958-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-04 | 1962-04-05 | 1962-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-04 | 1966-04-05 | 1966-10-05 | $7700.00 | Window Closed / Lapsed |