US2869692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interlocking building assembly
Assignee: Individual
•
Filing: 1954-07-23
•
Granted: 1959-01-20
•
Expires: 1974-07-23
Abstract
No abstract record available.
Inventors
- 👤 Thomas G Hassett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:51
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/10; E; E04; E04B; E04B1/00; E04B1/38; E04B1/58; E04B1/5825; E04B1/5831; E06; E06B; E06B9/00; E06B9/52; F; F16; F16B; F16B17/00; F16B17/004; F16B5/00; F16B5/06; F24; F24F; F24F13/00; F24F13/28; E04B1/18; E04B1/24; E04B1/2403; E04B2001/2406; E04B2001/5856; E04B2001/5881
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US850275A
Cited
US923810A
Cited
US1089499A
Cited
US1281856A
Cited
US1716624A
Cited
USRE22693E
Cited
GB614245A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |