US2541871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building construction
Assignee: Individual
•
Filing: 1945-07-24
•
Granted: 1951-02-13
•
Expires: 1965-07-24
Abstract
No abstract record available.
Inventors
- 👤 Heijmer Gustaf Bristol
- 👤 Sanda Bror Eric
- 👤 Trobeck Karl Gustaf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:02
CPC Classifications
E; E06; E06B; E06B1/00; E06B1/04; E06B1/52; E06B1/62; E06B1/64; E06B2001/622
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US466897A
Cited
US908858A
Cited
US2183619A
Cited
US985886A
Cited
US933328A
Cited
US981937A
Cited
US1863730A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |