Patent US2914815A successfully refreshed from Google Patents.
US2914815A
Expired / Lapsed
US
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Interlocked flooring and method
Assignee: Individual
•
Filing: 1955-08-17
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Granted: 1959-12-01
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Expires: 1975-08-17
Abstract
No abstract record available.
Inventors
- 👤 Alexander Verna Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:19
CPC Classifications
E; E04; E04F; E04F15/00; E04F15/02; E04F15/04; E04F2201/00; E04F2201/01; E04F2201/0107; E04F2201/02; E04F2201/021; E04F2201/022; E04F2201/04; E04F2201/043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US187502A
Cited
USRE16867E
Cited
CH35536A
Cited
US845107A
Cited
US1477813A
Cited
US1778352A
Cited
US1978075A
Cited
US2072292A
Cited
US2187672A
Cited
CH261915A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |