US3404494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Theatre and stage construction
Assignee: HOWARD D WOLFE
•
Filing: 1966-04-15
•
Granted: 1968-10-08
•
Expires: 1986-04-15
Abstract
No abstract record available.
Inventors
- 👤 Howard D Wolfe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:50
CPC Classifications
E; E04; E04H; E04H3/00; E04H3/10; E04H3/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1616198A
Cited
DE519607C
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US2499791A
Cited
US2602196A
Cited
DE852135C
Cited
US2848977A
Cited
US3210895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-08 | 1972-04-08 | 1972-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-08 | 1976-04-08 | 1976-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-08 | 1980-04-08 | 1980-10-08 | $7700.00 | Window Closed / Lapsed |