US3206899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Walled structure and method for making the same
Assignee: Dow Chemical Co
•
Filing: 1961-01-09
•
Granted: 1965-09-21
•
Expires: 1981-01-09
Abstract
No abstract record available.
Inventors
- 👤 Donald R Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:36
CPC Classifications
E; E04; E04G; E04G11/00; E04G11/04; B; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/20; B29C65/34; B29C65/3404; B29C65/344; B29C65/3468; B29C65/3472; B29C65/3476; B29C65/36; B29C65/3604; B29C65/362; B29C65/364; B29C65/3668; B29C65/3672; B29C65/3676; B29C65/56; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/303; B29C66/3034; B29C66/30341; B29C66/40; B29C66/41; B29C66/43; B29C66/432; B29C66/4322; B29C66/4326; B29C66/4329; B29C66/45; B29C66/70; B29C66/72; B29C66/727; B29C66/73; B29C66/739; B29C66/7392; B29C66/80; B29C66/83; B29C66/836; B29C66/8362; B29D; B29D25/00; E04B; E04B1/00; E04B1/32; E04B1/3211; E04B1/35; E04H; E04H7/00; E04H7/02; E04H7/04; E04H7/14; B29C66/71; B29C66/721; B29C66/7212; B29C66/90; B29C66/96; B29C66/964; B29K; B29K2105/00; B29K2105/04; B29K2105/25; B29K2105/253; B29K2105/255; B29L; B29L2031/00; B29L2031/10; B29L2031/106; E04B2001/3217; E04B2001/3229; E04B2001/3258; E04B2001/3264; Y; Y10; Y10S; Y10S425/00; Y10S425/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A HOLLOW CLOSED WALLED STRUCTURE OF GENERALLY DOME SHAPED CONFIGURATION COMPRISING A CONTINUOUS PRE-CUT COMPOSITE CELLULAR PLASTIC STRIP DISPOSED IN SUPERPOSED TURNS AS A SPIRAL AND DEFINING SAID DOME SHAPED CONFIGURATION, SAID PLASTIC STRIP HAVING THE LOWER SURFACE OF SAID STRIP
Claim 2
Dependent Claim
41 words
A HOLLOW CLOSED WALLED STRUCTURE OF GENERALLY DOME SHAPED CONFIGURATION COMPRISING A CONTINUOUS PRE-CUT COMPOSITE CELLULAR PLASTIC STRIP DISPOSED IN SUPERPOSED TURNS AS A SPIRAL AND DEFINING SAID DOME SHAPED CONFIGURATION, SAID PLASTIC STRIP HAVING THE LOWER SURFACE OF SAID STRIP
References Cited (Backward Citations)
DE35180C
Cited
US110882A
Cited
US1411172A
Cited
US697498A
Cited
FR500558A
Cited
US1918127A
Cited
US2052229A
Cited
US2378801A
Cited
US2505647A
Cited
US2837910A
Cited
US2850891A
Cited
US2877530A
Cited
US2888819A
Cited
US2958918A
Cited
US2944370A
Cited
US2977632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |