US1297082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for leveling the surface of plastic walls.
Assignee: Individual
•
Filing: 1917-04-21
•
Granted: 1919-03-11
•
Expires: 1937-04-21
Abstract
No abstract record available.
Inventors
- 👤 Harold P Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:27
CPC Classifications
E; E04; E04F; E04F21/00; E04F21/20; E04F21/24; E04F21/241; Y; Y10; Y10S; Y10S425/00; Y10S425/121
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1922-03-10 | 1922-09-09 | 1923-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1926-03-10 | 1926-09-09 | 1927-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1930-03-10 | 1930-09-09 | 1931-03-11 | $7700.00 | Window Closed / Lapsed |