US3412509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractable roof
Assignee: NICHOLAS B POPIL
•
Filing: 1966-03-17
•
Granted: 1968-11-26
•
Expires: 1986-03-17
Abstract
No abstract record available.
Inventors
- 👤 Nicholas B Popil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:12
CPC Classifications
E; E04; E04B; E04B7/00; E04B7/16; E04B7/166; E04H; E04H3/00; E04H3/10; E04H3/14; E04H3/16; E04H3/165
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2754899A
Cited
US2958083A
Cited
US2898607A
Cited
US3051232A
Cited
US3050743A
Cited
US3277615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |