Patent US2822841A successfully refreshed from Google Patents.
US2822841A
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Method and apparatus for assembling walls
Assignee: Individual
•
Filing: 1955-03-29
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Granted: 1958-02-11
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Expires: 1975-03-29
Abstract
No abstract record available.
Inventors
- 👤 William H Huffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:46
CPC Classifications
E; E04; E04G; E04G21/00; E04G21/24; E04G21/26; E04G21/14; E04G21/16; E04G21/18; E04G21/1891; Y; Y10; Y10S; Y10S269/00; Y10S269/91; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-10 | 1961-08-12 | 1962-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-10 | 1965-08-12 | 1966-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-10 | 1969-08-12 | 1970-02-11 | $7700.00 | Window Closed / Lapsed |