Patent US2843180A successfully refreshed from Google Patents.
US2843180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Walkers' aids
Assignee: Individual
•
Filing: 1954-03-11
•
Granted: 1958-07-15
•
Expires: 1974-03-11
Abstract
No abstract record available.
Inventors
- 👤 Schwartz Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:51
CPC Classifications
A; A61; A61H; A61H3/00; A61H3/04; A61H2003/046
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE167057C
Cited
US2732004A
Cited
US807409A
Cited
US1177582A
Cited
US2077569A
Cited
US2211164A
Cited
FR988280A
Cited
US2616725A
Cited
US2598046A
Cited
US2774605A
Cited
US2654416A
Cited
US2792874A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |