Patent US2903752A successfully refreshed from Google Patents.
US2903752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building construction
Assignee: Individual
•
Filing: 1954-11-26
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Granted: 1959-09-15
•
Expires: 1974-11-26
Abstract
No abstract record available.
Inventors
- 👤 Charles E Volk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:40
CPC Classifications
E; E04; E04H; E04H1/00; E04H1/12; E04H1/1205; E04H6/00; E04H6/02; E04H6/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US287078A
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US372551A
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US584640A
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US854514A
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US1697550A
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AT141332B
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US2260369A
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US2345500A
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US2625815A
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US2376695A
Cited
US2738249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |