US3537219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Demountable partition wall
Assignee: PRUDENT O BLANCKE
•
Filing: 1968-08-30
•
Granted: 1970-11-03
•
Expires: 1988-08-30
Abstract
No abstract record available.
Inventors
- 👤 William J Navarre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:49
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/74; E04B2/76; E04B2/78; E04B2/7854; E04B2/7863
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US696110A
Cited
US1133138A
Cited
US2187752A
Cited
US2277792A
Cited
US2766855A
Cited
US3290847A
Cited
US3339324A
Cited
US3429090A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |