US2633735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building construction
Assignee: Individual
•
Filing: 1948-04-02
•
Granted: 1953-04-07
•
Expires: 1968-04-02
Abstract
No abstract record available.
Inventors
- 👤 John A Dondero
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:48
CPC Classifications
E; E04; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/0801; E04F13/0832; E04F13/0853
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1053231A
Cited
US1014416A
Cited
US996946A
Cited
US1212298A
Cited
US1740553A
Cited
US2029082A
Cited
US2248348A
Cited
US2302920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-06 | 1956-10-06 | 1957-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-06 | 1960-10-06 | 1961-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-06 | 1964-10-06 | 1965-04-07 | $7700.00 | Window Closed / Lapsed |