US2109448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of installing and assembling wallboards
Assignee: Individual
•
Filing: 1935-06-24
•
Granted: 1938-02-22
•
Expires: 1955-06-24
Abstract
No abstract record available.
Inventors
- 👤 Welch Clifton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:54
CPC Classifications
E; E04; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/0801; E04F13/0832; E04F13/0833; E04F13/0841; E04F13/0844; Y; Y10; Y10S; Y10S52/00; Y10S52/06; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49623; Y10T29/49629
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) | 1941-02-21 | 1941-08-23 | 1942-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-02-21 | 1945-08-23 | 1946-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-02-21 | 1949-08-23 | 1950-02-22 | $7700.00 | Window Closed / Lapsed |