US2820990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Demountable building
Assignee: Individual
•
Filing: 1955-05-11
•
Granted: 1958-01-28
•
Expires: 1975-05-11
Abstract
No abstract record available.
Inventors
- 👤 Robert F Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:23
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/343; E04B1/34315; E04B1/34321; E04B1/32; E04B1/3211; E04B2001/327; E04B2001/3276; E04B1/35; E04B2001/3583
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) | 1961-01-27 | 1961-07-29 | 1962-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-27 | 1965-07-29 | 1966-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-27 | 1969-07-29 | 1970-01-28 | $7700.00 | Window Closed / Lapsed |