Patent US3608252A successfully refreshed from Google Patents.
US3608252A
Expired / Lapsed
US
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Combination hatchway-hothouse
Assignee: Individual
•
Filing: 1969-11-05
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Granted: 1971-09-28
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Expires: 1989-11-05
Abstract
Abstract GREENHOUSE STRUCTURE OF AT LEAST PARTIALLY ARCUATE CROSSSECTIONAL SHAPE WHICH OPENS TO EITHER SIDE ALONG THE TOP CENTER LINE. THE STRUCTURE IS TRANSPARENT, PREFERABLY COMPRISED OF MOLDED PLASTIC AND MAY BE SUBSTITUTED FOR BUILDING HATCHWAY DOORS.
Inventors
- 👤 Joseph R Bisson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:24
CPC Classifications
E; E04; E04H; E04H1/00; E04H1/12; A; A01; A01G; A01G9/00; A01G9/14; A01G9/1469; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |