Patent US994027A successfully refreshed from Google Patents.
US994027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interlocking concrete panels.
Assignee: Individual
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Filing: 1910-03-12
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Granted: 1911-05-30
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Expires: 1930-03-12
Abstract
No abstract record available.
Inventors
- 👤 William H O'beirne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:02
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/02; E04B2/42; E04B2/52; E04B2/44; E04B2/46; E04B2002/0202; E04B2002/0243; E04B2002/0245
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1914-05-29 | 1914-11-28 | 1915-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-05-29 | 1918-11-28 | 1919-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-05-29 | 1922-11-28 | 1923-05-30 | $7700.00 | Window Closed / Lapsed |